AP 10th Class Biology Bits Chapter 5 Coordination with Answers

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AP State Syllabus 10th Class Biology Bits 5th Lesson Coordination with Answers

Concept – 1: Responding to Stimuli

Question 1.
Which of the following is not a basic function ?
A) Movement
B) Control of hormones
C) Balance
D) Co-ordination
Answer:
C) Balance

Question 2.
The tree branched like structures appear on the cell body of neuron
A) Axon
B) Cyton
C) Dendrites
D) Afferent nerves
Answer:
C) Dendrites

Question 3.
Nissil’s granules are present in …………………
A) Eosinophils
B) Neutrophils
C) Cyton
D) Lymphocytes
Answer:
C) Cyton

Question 4.
The cells which nourish nutrients to the neurons
A) Erythrocytes
B) Glial cells
C) Monocytes
D) Blood platelets
Answer:
B) Glial cells

Question 5.
Which is not found in non – myelinated neurons ?
A) Cyton
B) Synapse
C) Axon
D) Dendrite
Answer:
C) Axon

Question 6.
The arcs which operate when you put your leg on sharp thing ………………….
A) Reflex arcs
B) Controlled arcs
C) Brain
D) Involuntary arcs
Answer:
A) Reflex arcs

Question 7.
We did not know about the Nervous control system in………………. century.
A) 16^th
B) 17^th
C) 18^th
D) 19^th
Answer:
B) 17^th

Question 8.
Nervous system starts from …………………. part.
A) Brain
B) Spinal cord
C) A and B
D) Heart
Answer:
C) A and B

Question 9.
The longest structure in neuron is …………………..
A) Cyton
B) Axon
C) Dendrites
D) Nerve
Answer:
B) Axon

Question 10.
The life processes in humans are controlled and regulated by :
A) reproductive and endocrine systems
B) respiratory and nervous systems
C) endocrine and digestive systems
D) nervous and endocrine systems
Answer:
D) nervous and endocrine systems

Question 11.
The reactions which occur immediately and perfectly are known as …………………….
A) Reflex action
B) Controlled action
C) Uncontrolled action
D) Work
Answer:
A) Reflex action

Question 12.
You observed the slide of neuron under microscope. How were dendrites appeared in the specimen ?
A) round shape
B) Cylindrical in shape
C) Branched structures protruded from cyton
D) Helical structure
Answer:
C) Branched structures protruded from cyton

Question 13.
The system, which recognises the external and internal changes of the body is ………………
A) Digestive
B) Endocrine
C) Nervous
D) Circulatory
Answer:
C) Nervous

Question 14.
Jerking your body when you hears a loud sudden noise is a good example for
A) Reflex action
B) Voluntary action
C) Both.
D) None
Answer:
A) Reflex action

Question 15.
We can understand that “responses are brought about by rapid changes in body” by doing this experiment
A) Running on the track
B) Stick holding experiment
C) Sleeping experiment
D) All the above
Answer:
B) Stick holding experiment

Concept – 2 : Integration Pathways Nerves Coordination

Question 16.
The structures that act as telephone wires in the body
A) Veins
B) Arteries
C) Muscle fibres
D) Neurons
Answer:
D) Neurons

Question 17.
The organ that integrates, processes the stimuli
A) Heart
B) Synapse
C) Pituitary gland
D) Brain
Answer:
B) Synapse

Question 18.
Find out the odd one.
A) Axon
B) Dendrite
C) Valve
D) Cyton
Answer:
C) Valve

Question 19.
Choose the correct order for nervous control
A) Response, Stimuli
B) Stimuli, Response
C) Hearihg, Stimuli
D) Stimuli, Order of brain
Answer:
B) Stimuli, Response

Question 20.
Sequential events that bring about responses
1. Detecting the stimuli
2. Transmission of information then 3 and 4 are …………………………
A) Response – Analysis
B) Analysis – Reflex
C) Analysis – Response
D) Reflex – Analysis
Answer:
C) Analysis – Response

Question 21.
Coordination occurs …………………
i) due to stimuli changes occur in muscles
ii) the change leads to responses
iii) the silence of responses leads to co-ordination
A) i, ii only
B) i only
C) iii only
D) ii only
Answer:
D) ii only

Question 22.
In a synapse, chemical signal is transmitted from:
A) axon to cell body of the same neuron.
B) cell body to axon end of the same neuron.
C) dendrite end of one neuron to axon end of adjacent neuron.
D) axon end of one neuron to dendrite end of adjacent neuron.
Answer:
C) dendrite end of one neuron to axon end of adjacent neuron.

Question 23.
What is true about below given picture?

A) Connection between the dendrites of different neurons
B) Functional region between two neurons
C) Analysis of received information
D) Both A and B
Answer:
B) Functional region between two neurons

Question 24.
A node of Ranvier is a :
A) bundle of microtubules
B) naked portion of a myelinated axon
C) group of neural cell bodies in the central nervous system
D) knob – like structure at the end of an axon
Answer:
B) naked portion of a myelinated axon

Question 25.
The cells that give the nutrients to the neurons are ………………….
A) Red blood cells
B) Monocytes
C) Blood platelets
D) Glial cells
Answer:
D) Glial cells

Question 26.
Cells present in myelin sheath of neuron are …………………..
A) Nissel’s granules
B) Schwann cells
C) α – particles
D) Globulins
Answer:
B) Schwann cells

Question 27.
The junction between nerve cells is known as………………..
A) Axon
B) Synapse
C) Stimuli
D) Neuron
Answer:
B) Synapse

Question 28.
Separate the parts which do not form the synapse
a) Axon
b) Dendrite
c) Nodes of Ranvier
d) Nissil granules
A) a, c
B) c, d
C) a, d
D) a, b
Answer:
B) c, d

Question 29.
a) Neurons do not have any protoplasmic connection at synapse.
b) Information is passed in the form of chemical and electrical signals through synapse.
A) a, b both are true
B) a is true b is false
C) a is true b is false
D) a, b both are false
Answer:
A) a, b both are true

Question 30.
Read the following paragraph.
It is very difficult to find the types of neurons based on the presence of dendrites and length of axons in brain and spinal cord. But we can find out axons based on the presence of myelin sheath.
Where is my eline sheath present on the neuron ?
A) Cyton
B) Dendrites
C) Synapse
D) Axon
Answer:
D) Axon

Question 31.
Name the part to be labelled in the ‘?’

A) Axon
B) Neuron
C) Dendrite
D) Cyton
Answer:
A) Axon

Question 32.
Name the given diagram.

A) Algae
B) Neuron
C) Blood cell
D) Mitochondria
Answer:
B) Neuron

Question 33.
Find the missing part in the diagram.

A) Cyton
B) Nucleus
C) Axon
D) Dendrites
Answer:
B) Nucleus

Question 34.
Galen, a Greek physiologist made one notable observation on :
A) Nervous pathways
B) Spinal cord
C) Nerve roots
D) All of these
Answer:
B) Spinal cord

Concept – 3 : Reflex Arc

Question 35.
What sort of biological process was proved by doing knee jerk activity?
A) Involuntary
B) Voluntary
C) Mixed action
D) Favourable action
Answer:
B) Voluntary

Question 36.
You had held up the scale from falling with the help of finger. What happened here ?
A) Responses in the eye
B) Changes occurred in the muscles – Responses
C) Stimuli occurred in fingers
D) Body movement – Responses
Answer:
B) Changes occurred in the muscles – Responses

Question 37.
The nerve or neuron that tells “ferrying towards”.
A) Afferent nerve
B) Sensory neuron
C) A or B
D) Motor neuron
Answer:
C) A or B

Question 38.

What is related part in the box ‘Q’ ?
A) Axon
B) Motor neuron
C) Sensory nerves
D) Association nerves
Answer:
D) Association nerves

Question 39.
Identify the correct sequence of the reflex arc
A) Sense Organ → Spinal cord → Effector organ → Afferent nerve → Efferent nerve
B) Sense Organ → Afferent nerve→ Spinal cord → Efferent nerve → Effector Organ
C) Sense Organ → Efferent nerve → Spinal cord → Afferent nerve → Effector Organ
D) Effector Organ → Afferent nerve → Spinal cord → Efferent nerve → Sense Organ
Answer:
B) Sense Organ → Afferent nerve→ Spinal cord → Efferent nerve → Effector Organ

Question 40.
Consider the statements a & b.
a – Changes occur in muscles due to stimuli
b – The change occurs in the speed of muscles leads to responses.
A) Both a & b are true
B) a is true b is false
C) a is false b is true
D) Both a & b are false
Answer:
A) Both a & b are true

Question 41.

It is a……………….
A) Sensory Nerve
B) Motor Nerve
C) Mixed Nerve
D) Controlling Nerve
Answer:
A) Sensory Nerve

Question 42.
You sat in the cricket ground. Ball was coming towards you. You escaped from it immediately. Which type of reaction is this ?
A) Voluntary action
B) Involuntary action
C) Reflex action
D) Controlled action
Answer:
C) Reflex action

Question 43.
Which of the system does not help in the movement of muscles ?
A) Nervous system
B) Contraction of muscles
C) Bones
D) Both A and B
Answer:
C) Bones

Question 44.
Nerve transmission from stimulus to a response can occur at a maximum speed of about …………….. meters per second.
A) 10
B) 1000
C) 100
D) 120
Answer:
C) 100

Question 45.
The contraction of pupil of the eye in the presence of bright light is an example of:
A) Voluntary reflex
B) Spinal reflex
C) Cerebral reflex
D) Adrenal reflex
Answer:
C) Cerebral reflex

Question 46.
Here A and B represents
A) A = Brain, B = Sensory nerve
B) A = Sensory nerve, B = Receptor
C) a = Receptor, B = Sensory nerve
D) A = Sensory nerve, B = Brain
Answer:
D) A = Sensory nerve, B = Brain

Question 47.
Myelin sheath comprises ……………………….
A) Proteins
B) Carbohydrates
C) Lipids
D) Vitamins
Answer:
C) Lipids

Question 48.
The cells which are destroyed by viruses in Polio disease ………………………
A) Monocytes
B) Erythrocytes
C) Motor nerves
D) Sensory nerves
Answer:
C) Motor nerves

Question 49.
The nerves that carry information from sensory organs to brain or spinal cord
A) Motor nerves
B) Dendrites
C) Efferent nerves
D) Afferent nerves
Answer:
D) Afferent nerves

Question 50.
The nerves that carry information from brain or spinal cord to effecter organs
A) Dendrites
B) Afferent nerves
C) Efferent nerves
D) Sensory nerves
Answer:
C) Efferent nerves

Question 51.
Which of the following are cerebral reflexes ?
i) A person pulls away his hand on touching a hot object.
ii) A person spits out immediately when a fly enters his mouth while talking.
iii) A person walking bare foot lifts his foot at once on stepping on to a nail
iv) A person’s pupil contracts at once in the presence of bright light.
A) (i) and (ii)
B) (ii) and (iii)
C) (iii) and (iv)
D) (ii) and (iv)
Answer:
D) (ii) and (iv)

Question 52.
A cell (or group of cells) in a sense organ
which is sensitive to a particular type of stimulus is called :
A) interneuron
B) effector
C) receptor
D) acceptor
Answer:
C) receptor

Concept – 4 : Central Nervous System

Question 53.
The part which protects brain is ………………….
A) Cranium
B) Meninges
C) A and B
D) Bones
Answer:
C) A and B

Question 54.
The weight of brain is ………….. % of the whole body.
A) 1%
B) 2%
C) 3%
D) 4%
Answer:
B) 2%

Question 55.
The part which controls anger, pain, etc., is ……………………
A) Cerebrum
B) Diencephalon
C) Cerebellum
D) Medulla oblongata
Answer:
B) Diencephalon

Question 56.
If a person loses control on emotions, which part of brain is responsible for this?
A) Cerebrum
B) Diencephalon
C) Mid brain
D) Cerebellum
Answer:
B) Diencephalon

Question 57.
In the brain, which of the following is present in white portion ?
A) Cyton
B) Colour pigment
C) Axons
D) Meninges
Answer:
C) Axons

Question 58.
The part which controls pituitary gland in brain :
A) Cerebrum
B) Cerebellum
C) Medulla oblongata
D) Hypothalamus
Answer:
D) Hypothalamus

Question 59.
The system which is formed by ganglion of brain and spinal cord is
A) Sympathetic nervous system
B) Parasympathetic nervous system
C) Involuntary system
D) Peripheral nervous system
Answer:
A) Sympathetic nervous system

Question 60.
Olfactory lobes are concerned with sense of :
A) smell
B) hearing
C) taste
D) touch
Answer:
A) smell

Question 61.
The sensory centre that controls various actions in the body
A) Medulla
B) Cerebrum
C) Cerebellum
D) Diencephalon
Answer:
B) Cerebrum

Question 62.
The part of brain that joins fore brain and mid brain
A) Medulla
B) Cerebrum
C) Diencephalon
D) Pons varoli
Answer:
A) Medulla

Question 63.
The brain is protected by bony box called
A) Rib cage
B) Stomach
C) Cranium
D) Pleura
Answer:
C) Cranium

Question 64.
The brain is covered by three layers. The middle layer is
A) Dura mater
B) Pia mater
C) Arachnoid mater
D) Pleura
Answer:
C) Arachnoid mater

Question 65.
The liquid portion between the inner layers of brain and spinal cord is
A) Lymph
B) Plasma
C) Cerebro spinal fluid
D) Serum
Answer:
C) Cerebro spinal fluid

Question 66.
Brain and spinal cord are related to this nervous system
A) Sympathetic
B) Parasympathetic
C) Peripheral
D) Central
Answer:
D) Central

Question 67.
The cranial nerve that controls heart beat
A) Afferent nerve
B) Sensory nerve
C) Mixed nerve
D) Vagus nerve
Answer:
D) Vagus nerve

Question 68.
The white colour inner side of the brain is due to ………………….
A) Cytons
B) Axons
C) Dendrites
D) Glial cells
Answer:
B) Axons

Question 69.
A person has lost control on emotions. Which part of brain is responsible for it?
A) Cerebrum
B) Diencephalon
C) Mid brain
D) Cerebellum
Answer:
B) Diencephalon

Question 70.
Ramesh labelled the picture wrongly. Correct the parts (a)and (b).

A) a – Cerebrum, b – Cerebellum
B) a – Spinal cord, b – Mid brain
C) a – Pons varoli, b – Gland
D) a – Medulla, b – Cerebellum
Answer:
A) a – Cerebrum, b – Cerebellum

Question 71.
Which of the following regulates the activities such as breathing, beating of the heart without our thinking?
A) Nervous system
B) Endocrine system
C) Respiratory system
D) All the above
Answer:
A) Nervous system

Question 72.
Brain uses …………………… of the whole body energy.
A) 2%
B) 100 %
C) 20 %
D) 50%
Answer:
C) 20 %

Question 73.
The following diagram represents the external view of human brain. Identify the parts labelled 1, 2, 3 and 4.

A) 1 – Cerebellum, 2 – Mid brain, 3 – Cerebrum, 4 – Spinal cord
B) 1 – Cerebellum, 2 – Mid brain, 3 – Cerebrum, 4 – Pons
C) 1 – Cerebrum, 2 – Mid brain, 3 – Cerebellum, 4 – Spinal cord
D) 1 – Cerebrum, 2 – Hypothalamus, 3 – Cerebellum, 4 – Pons
Answer:
C) 1 – Cerebrum, 2 – Mid brain, 3 – Cerebellum, 4 – Spinal cord

Question 74.
The meninges surrounding the brain from inner to outer are :
A) Pia mater, Arachnoid mater, Dura mater
B) Duramater and Pia mater
C) Cerebrospinal fluid and Arachnoid mater
D) Arachnoid mater, Dura mater, Pia mater
Answer:
A) Pia mater, Arachnoid mater, Dura mater

Question 75.
Which structure makes up about 10 percent of the brain’s mass and contains about 50 percent of its neurons ?
A) Cerebral cortex
B) Cerebellum
C) Medulla oblongata
D) Pons varoli
Answer:
B) Cerebellum

Question 76.
In humans, damage to the cerebellum typically produces :
A) inability to initiate movement
B) movements that are slow and robot – like
C) resting tremor
D) muscle rigidity
Answer:
D) muscle rigidity

Question 77.
The surface area of cerebrum is increased by………………….
A) myelin sheath
B) gyri, sulci
C) axons
D) dendrites
Answer:
B) gyri, sulci

Question 78.
It is the seat for memory and thinking in brain
A) Diencephalon
B) Cerebellum
C) Mid brain
D) Cerebrum
Answer:
D) Cerebrum

Question 79.
Kavita solves puzzles. The part of the brain that helps her is ……………….
A) Cerebellum
B) Mid brain
C) Cerebrum
D) Diencephalon
Answer:
C) Cerebrum

Question 80.
We feel cold, heat, pain and pressure. These stimulus responses are under the control of this part of the body
A) Mid brain
B) Medulla oblongata
C) Cerebrum
D) Cerebellum
Answer:
C) Cerebrum

Question 81.
Find the correct statement.
A) Cerebrum is the centre for muscular activities.
B) Diencephalon controls thinking, memory and reasoning.
C) Cerebellum maintains posture, equilibrium and muscle tone.
D) Midbrain coordinates reflexes like swallowing, coughing, sneezing and vomiting.
Answer:
C) Cerebellum maintains posture, equilibrium and muscle tone.

Question 82.
This phenomenon refers to the actions upon a blood vessel which alters its diameter
A) Cerebral arc
B) Vasomotor
C) Dilation
D) Micturition
Answer:
D) Micturition

Question 83.
Suppose you sneezes unexpectedly.
Which part of the brain influences the action ?
A) Mid brain
B) Cerebrum
C) Cerebellum
D) Medulla oblongata
Answer:
D) Medulla oblongata

Concept – 5 : Spinal Cord

Question 84.
The number of pairs of cranial nerves in man
A) 10
B) 11
C) 12
D) 13
Answer:
C) 12

Question 85.
The number of pairs of spinal nerves in man
A) 30
B) 31
C) 32
D) 33
Answer:
B) 31

Question 86.
The ‘H’ shaped structure in the T.S of spinal cord is
A) Gyri
B) White matter
C) Sulci
D) Grey matter
Answer:
D) Grey matter

Question 87.
The part that coordinates involuntary actions in the body
A) Nervous system, Hormones control
B) Hormones control
C) Medulla oblongata, Autonomous nervous system
D) Medulla oblongata
Answer:
C) Medulla oblongata, Autonomous nervous system

Question 88.
The scientists who observed the liveliness of frog even after the removal of brain is ………………
A) Davinci, Stephen Hales
B) Davinci, Darwin
C) Stephen Hales, Francis
D) Charles Bell
Answer:
A) Davinci, Stephen Hales

Question 89.
The scientists who proved/ showed the functions of two roots of spinal cord are …………..
A) Charles Bell, Stephen Hales
B) Charles Bell, Magendie
C) Da Vinci, Magendie
D) Francis, Magendie
Answer:
B) Charles Bell, Magendie

Question 90.
Reflex actions are under the control of ……………..
A) Medulla
B) Cerebellum
C) Hypothalamus
D) Spinal cord
Answer:
D) Spinal cord

Question 91.
The cells which analyse the information in spinal cord
A) Sensory nerve fibres
B) Motor nerve fibres
C) Axons
D) Associated neurons
Answer:
D) Associated neurons

Question 92.
Choose the correct one.
a) We do not think while climbing the stairs where we are keeping our leg.
b) For this, controlled reflex arcs are the reason.
A) a, b both are true
B) a is true, b is false
C) a is false, b is true
D) a,b both are false
Answer:
A) a, b both are true

Question 93.
a) The dorsal horn of spinal cord control movement of muscles
b) Ventral horn of spinal cord brings information regarding sensation
A) Both a & b are true
B) a is true, b is false
C) b is true, a is false
D) Both a & b are false
Answer:
C) b is true, a is false

Question 94.
The role of spinal cord in nervous control was studied by:
A) Leonardo da Vinci
B) Stephen Hales
C) Both A and B
D) Francois Magendie
Answer:
A) Leonardo da Vinci

Question 95.
One of the examples is not involuntary function of autonomous nervous system
A) Expansion and contraction of pupil of our eye
B) Removing the leg when a thorn pierced the leg
C) Control of the level of sugar in blood
D) Control of the heart beat
Answer:
A) Expansion and contraction of pupil of our eye

Question 96.
Number of peripheral nerves is ………………….. pairs.
A) 12
B) 31
C) 43
D) 40
Answer:
C) 43

Question 97.
We can’t see anything soon after entering a dark room. Find the reason.
a) Cones in the eyes do not respond
b) The radius of pupil decreases
A) Both a & b are true, b explains a
B) Both a & b are true, b does not explain a
C) a is true, b is false
D) Both are false
Answer:
D) Both are false

Question 98.
Sympathetic nervous system is formed by :
A) chain of ganglia on either sides of vertebral column
B) nerves arising from ganglion of brain
C) nerves arising’from posterior part of spinal cord
D) chain of ganglia on either side of vertebral column and associated nerves
Answer:
D) chain of ganglia on either side of vertebral column and associated nerves

Question 99.
The parasympathetic and sympathetic nervous systems make up the ………………….. nervous system.
A) peripheral
B) autonomous
C) central
D) somatic
Answer:
B) autonomous

Question 100.
Spinal cord extends from :
A) back of medulla oblongata to the back of intestine
B) all along the length of vertebral column
C) back of hind brain to the back of lumbar region
D) ventral side of the vertebral column
Answer:
C) back of hind brain to the back of lumbar region

Concept – 6 : Coordination without Nerves

Question 101.
In Latin the word ‘insula’ means
A) Seduce
B) Island
C) Vein
D) Blood
Answer:
B) Island

Question 102.
Diabetes is related to this gland.
A) thyroid
B) pancreas
C) adrenal
D) pituitary
Answer:
B) pancreas

Question 103.
Match the following.
1. Somatotrophin
2. Adrenalin
3. Testosterone

a. Fight/ Flight
b. Growth of bones
c. Males
A) 1 – a, 2 – b, 3 – c
B) 1 – c, 2 – b, 3 – a
C) 1 – b, 2 – c, 3 – a
D) 1 – b, 2 – a, 3 – c
Answer:
D) 1 – b, 2 – a, 3 – c

Question 104.
Chemical coordination in the body is brought out by ………………………
A) blood
B) lymph
C) enzymes
D) hormones
Answer:
D) hormones

Question 105.
Identify the incorrect pair.
A) Thyroxin – Thyroid
B) Adrenalin – Pituitary
C) Insulin – Pancreas
D) Progesterone – Ovary
Answer:
B) Adrenalin – Pituitary

Question 106.
The organism which has ductless glands ………………
A) Amoeba
B) Earthworm
C) Euglena
D) Human being
Answer:
D) Human being

Question 107.
The gland which acts like a bridge between nervous system and endocrine system is ………………..
A) Adrenal gland
B) Thyroid gland
C) Testes
D) Pituitary gland
Answer:
D) Pituitary gland

Question 108.
Endocrine gland present in head is (or) The master gland in our body is
A) Pituitary
B) Adrenal
C) Islets of langerhans
D) Thyroid
Answer:
A) Pituitary

Question 109.
The-substance secreted by ductless glands is ……………….
A) Blood
B) Lymph
C) Enzymes
D) Hormones
Answer:
D) Hormones

Question 110.
Imagine two roosters are fighting at your kitchen garden. What hormone might be secreted in their body during that stage ?
A) Adrenalin
B) Thyroxine
C) Vasopressin
D) Insulin
Answer:
A) Adrenalin

Concept – 7 : Feedback Mechanism

Question 111.
The mechanism which controls the action of hormones is …………………..
A) Feedback mechanism
B) Controlling nervous system
C) Effect of auxins
D) Growth of organisms
Answer:
A) Feedback mechanism

Question 112.
The gland present on the given organs is not related to urination.

A) Thyroid gland
B) Adrenal gland
C) Pituitary gland
D) Gonads
Answer:
B) Adrenal gland

Question 113.
The hormone that regulates menstrual cycle in women
A) Thyroxine
B) Testosterone
C) Testes
D) Pituitary gland
Answer:
D) Pituitary gland

Question 114.
The Somatotrophin which helps in growth of body is secreted by ………………..
A) Thyroid gland
B) Adrenal gland
C) Testes
D) Pituitary gland
Answer:
D) Pituitary gland

Question 115.
Glucose is. converted into …………………… by insulin and stored in the liver
A) Maltose
B) Glycogen
C) Sucrose
D) Starch
Answer:
B) Glycogen

Question 116.
Doctor advised Dileep that, he has to . take insulin daily compulsorily. Which disease is he suffering from ?
A) Epilepsy
B) Diabetes Insipidus
C) Diabetes Mellitus
D) Langerhans
Answer:
C) Diabetes Mellitus

Question 117.
Suma was walking on the road. All of a sudden she saw a snake approaching towards her. She was’ afraid of it. The reason for this is ………………….
1. She is timid by nature.
2. Due to the secretion of Adrenalin change occurred in her
3. Due to the secretion of vasopressin . change occurred in her
4. To tell it to her mother and father
A) 1, 2, 3
B) 3
C) 2
D) 2, 3, 4
Answer:
C) 2

Question 118.
Thyroxine : Metabolism:: Testosterone: ………………..
A) Sex organs in man
B) Sex organs in woman
C) Thyroid gland
D) Fat gland
Answer:
A) Sex organs in man

Question 119.
Doctor diagnosed a patient that he is suffering from the deficiency of a hormone. Doctor advised him to try to reduce the sugar percentage in his diet. Name the deficient hormone that the patient is suffering from.
A) Thyroxine
B) Insulin
C) Somatotrophin
D) Testosterone
Answer:
B) Insulin

Question 120.
A doctor advised a person to take of insulin injection because his :
A) blood pressure was high
B) heart beat was high
C) blood sugar was high
D) thyroxine level in blood was high
Answer:
C) blood sugar was high

Concept – 8 : Control Mechanism in Plants

Question 121.
Leaf movement in mimosa helps to
A) reduce photosynthesis
B) protect from grazers
C) releasing phytohormones
D) regulate its growth
Answer:
B) protect from grazers

Question 122.
The chemical substance which destroy s weeds ………………….
A) IAA
B) 2 – 4 – D
C) ABA
D) NAA
Answer:
B) 2 – 4 – D

Question 123.
The phytohormone which is respon¬sible for seed dormancy is …………………..
A) IAA
B) NAA
C) GA
D) ABA
Answer:
D) ABA

Question 124.
The special function of cytbkinins is
A) Production of more flowers
B) Production of more auxifts
C) Cell division
D) Cell destruction
Answer:
C) Cell division

Question 125.
Gibberellins play a vital role in the production of …………………
A) More buds
B) Size of flower
C) Short plants to long plants
D) Growth of lateral and apical buds equally
Answer:
C) Short plants to long plants

Question 126.
Apical dominance means……………………..
A) Continuous growth of apical buds
B) Apical buds dominate the lateral buds
C) Cutting of apical stem
D) Equal growth of apical and lateral branches
Answer:
B) Apical buds dominate the lateral buds

Question 127.
If we cut the apical bud of a plant ……………..
A) Plant grow at usual height
B) Lateral branches develop
C) Length of plant increases
D) Roots do not develop
Answer:
B) Lateral branches develop

Question 128.
The scientist who proposed the name ‘hormone’.
A) Paul Langerhans
B) William Blake
C) Starling
D) Francis and Darwin
Answer:
C) Starling

Question 129.
The “Influence substance” in the plants discovered by F.W. Went
A) Hormone
B) Gibberellin
C) Enzyme
D) Auxin
Answer:
D) Auxin

Question 130.
F.W. Went used these plants in his experiments
A) Agar – Agar
B) Oats
C) Wheat
D) Pea
Answer:
B) Oats

Question 131.
High concentration of auxin:
A) stimulates stem growth and root growth
B) stimulates stem growth and inhibits root growth
C) inhibits lateral buds and promotes root growth
D) inhibits stem growth and root growth
Answer:
B) stimulates stem growth and inhibits root growth

Question 132.
The movements which are not related with the direction of stimuli ?
A) Hydrotropism
B) Geotropism
C) Tropic movements
D) Nastic movements
Answer:
D) Nastic movements

Question 133.
Who stated that “There is some influence substance in plants ?”
A) Charles Darwin
B) Mendel, Charles Darwin
C) Francis, F W Went
D) FW. Went
Answer:
A) Charles Darwin

Question 134.
The hormone that influences ripening of fruits
A) Gibberellins
B) Ethylene
C) Cytokinins
D) Auxin
Answer:
B) Ethylene

Question 135.
Which plant hormone is responsible for closing of stomata ?
A) Abscisic acid
B) Auxin
C) Cytokinin
D) Ethylene
Answer:
A) Abscisic acid

Question 136.
Observe the following statements.
1) Promote cell division.
2) Promotion of sprouting of lateral buds.
3) Delaying aging in leaves.
Which of the following is concerned with the above characters ?
A) Auxins
B) Cytokinins
C) Gibberellins
D) Abscisic acid
Answer:
B) Cytokinins

Question 137.
The first phytohormone discovered in plants is …………………..
A) Auxins
B) Gibberellins
C) Cytokinins
D) ABA
Answer:
A) Auxins

Question 138.
The phytohormone which helps in the prevention of loss of water is
A) Gibberellins
B) Auxin
C) Cytokinin
D) ABA
Answer:
D) ABA

Question 139.

List – 1	List – 2
1. Gibberellin	a. Fruits
2. Auxin	b. Cell division
3. Ethylene	c. Growth

Which one is not matched correctly ?
A) 1
B) 2
C) 3
D) 1, 2, 3
Answer:
C) 3

Question 140.
If we observe potted plant growing horizontally on ground for some days, what will be the correct diagram given below ?

Answer:
(c)

Question 141.
Observe the following a,b statements.
a) Abscisic acid prevents seed dormancy.
b) Gibberellin promotes seed dormancy.
A) a,b both are true
B) a is true b is false
C) a is false b is true
D) a,b both are false
Answer:
D) a,b both are false

Question 142.
Roots of a plant show:
A) positive phototropism and negative geotropism
B) negative phototropism and positive geotropism
C) negative tactic movement and positive tropic movement
D) positive geotropism of stem and roots
Answer:
B) negative phototropism and positive geotropism

Question 143.
Sprouting of lateral buds is promoted by
A) Auxins
B) Gibberellins
C) Cytokinins
D) A & B
Answer:
C) Cytokinins

Question 144.
The sweet smell of ripen fruits is due to
A) Cytokinins
B) ABA
C) Auxins
D) Ethylene
Answer:
D) Ethylene

Question 145.
Fadlike swellings atthe base of Mimosa leaves are called
A) nodules
B) pulvini
C) venules
D) hormones
Answer:
B) pulvini

Question 146.
The hormone which inhibits the growth of plant is
A) Auxins
B) Cytokinins
C) Gibberellins
D) Abscisic acid
Answer:
D) Abscisic acid

Question 147.
The hormone promotes ageing in leaves in plants ?
A) Auxins
B) Abscisic acid
C) Cytokinins
D) Ethylene
Answer:
B) Abscisic acid

Question 148.
Dilation of the pupil of the eye is under the control of this hormone.
A) Thyroxine
B) Estrogen
C) Adrenalin
D) Insulin
Answer:
C) Adrenalin

Question 149.
Auxins were discovered by :
A) Went
B) Charles Darwin
C) Banting and Best
D) Francis Darwin
Answer:
A) Went

Question 150.
Find the incorrect statement regarding thyroxine.
A) Thyroid gland requires iron for the synthesis of thyroxine.
B) It regulates carbohydrate, protein and fat metabolism.
C) Iodine is essential for the synthesis of thyroxine.
D) Thyroid gland can enlarge due to lack of thyroxine.
Answer:
B) It regulates carbohydrate, protein and fat metabolism.

Question 151.
The part of brain with the greatest influence on the endocrine system is the:
A) Hypothalamus
B) Medulla oblongata
C) Cerebral cortex
D) Pituitary
Answer:
A) Hypothalamus

Question 152.
Gonadotropins are :
A) produced by ovaries and testes
B) thyroid stimulating hormones
C) stimulators of ovaries and testes
D) follicle stimulating hormones
Answer:
C) stimulators of ovaries and testes

Question 153.
The plant hormone responsible for ‘one rotten apple spoiling the whole bunch’ is :
A) Auxin
B) Gibberellin
C) Cytokinin
D) Ethylene
Answer:
D) Ethylene

Question 154.
Maximum seed germination can be achieved by treating the seeds with :
A) Auxin
B) Gibberellins
C) Abscisic acid
D) Ethylene
Answer:
B) Gibberellins

Question 155.
Luteinizing hormone in females:
A) stimulates ovary to secrete Oestrogen
B) helps in release of ovum from ovary
C) controls blood pressure
D) helps in milk production
Answer:
B) helps in release of ovum from ovary

Question 156.
What happens when Adrenaline level increases in our blood ?
i) The hair on the body becomes erect and we get goose bumps.
ii) Skin becomes sensitive
iii) Anger decreases
iv) Urine may discharge
A) i, ii and iii
B) ii, iii and iv
C) iii and iv
D) i, ii and iv
Answer:
D) i, ii and iv

Question 157.
A cap like gland that is close to kidney.
A) Liver
B) Adrenal
C) Pancreas
D) Thyroid
Answer:
B) Adrenal

Question 158.
The hormone responsible for phototropism in plants.
A) Ethylene
B) Cytokinins
C) Gibberellins
D) Auxins
Answer:
D) Auxins

Concept – 9 : Tropic and Nastic movements in Plants

Question 159.

List – A	List – B
1. Sunflower plant	a. Phototropism
2. Mimosa pudica	b. Chemotropism
3. Cucumber creeper	c.Thigmotropism

Which one is not matched correctly ?
A) 1
B) 3
C) 2
D) All of the above
Answer:
C) 2

Question 160.
a – Butterfly flutters on flower to obtain nectar
b – The ovary of flowers is sweet in taste
A) Both a and b are true – a explains b
B) Both a and b are true – a doesn’t explain b
C) a is false, b is true
D) a is true, b is false
Answer:
D) a is true, b is false

Question 161.
The role of auxins is to :
A) promote fruit growth
B) stimulate positive phototropism
C) cause roots to develop
D) all of the above
Answer:
B) stimulate positive phototropism

Question 162.
Consider the statements a and b.
a – We will see nastic movements in mimosa
b – The same plant species exhibit hydrotropism
A) Both ‘a’ and ‘b’ are true
B) ‘a’ is true ‘b’ is false
C) ‘a is false ‘b’ is true
D) Both ‘a’ and’b’ are false
Answer:
A) Both ‘a’ and ‘b’ are true

Question 163.
Guess the correct answer in the ‘?’ box
A) Growth promoters
B) Growth inhibitors
C) Tropic
D) Trophism

Answer:
C) Tropic

Question 164.
Root shows ……………………. type of tropism.
A) Phototropism
B) Geo
C) Chemo
D) Nastic
Answer:
B) Geo

Question 165.
The reason for fluttering of butterflies around the flowers is …………………..
A) Chemotropism
B) Thigmotropism
C) Hydrotropism
D) Nastic movements
Answer:
A) Chemotropism

Question 166.
The growth of root is geotropism, and the growth of stem is …………………
A) Negative geotropism
B) Thigmotropism
C) Chemotropism
D) Hydrotropism
Answer:
A) Negative geotropism

Question 167.
Plants with weak stems such as cucumber and bittergourd show………………..
A) Phototropism
B) Thigmotropism
C) Geotropism
D) Chemotropism
Answer:
B) Thigmotropism

Question 168.
‘a’ – Bitter gourd grows by arranging support
‘b’- Ridge gourd grows without support
A) a & b are true
B) a is true, b is false
C) b is true, a is false
D) both a & b are false
Answer:
B) a is true, b is false

Question 169.
The plant that grows in your surroundings / school premises shows thigmotropism. Find it from the following.
A) Mango
B) Cucumber
C) Sunflower
D) Banyan tree
Answer:
B) Cucumber

Question 170.
The following plant species show phototropism
A) Coconut, Sunflower
B) ‘Cucumber, Banyan
C) Mango, Neem
D) A & C
Answer:
A) Coconut, Sunflower

Question 171.
A farmer arranged support for cucumber plants. So that they creep and grow in normal conditions. What type of tropic movement is shown by cucumber?
A) Phototropism
B) Geotropism
C) Hydrotropism
D) Thigmotropism
Answer:
D) Thigmotropism

Question 172.
Scientific name of ‘touch me not’ plant is
A) Mangifera indica
B) Mimosa pudica
C) Azadiraehta indica
D) Cinchona officinalis
Answer:
B) Mimosa pudica

Question 173.
One of the following is not a growth effector
A) Auxins
B) Cytokinins
C) Abscisic acid
D) Gibberellins
Answer:
C) Abscisic acid

Question 174.
Find out mis – matched pair
1) Cucumber – Thigmotropism
2) Sunflower – Phototropism
3) Nectar secretion – Hydrotropism
A) 1
B) 1 & 2
C) 3
D) 1 & 3
Answer:
C) 3

Question 175.
Name the type of responses, shown by the plant in the picture due to contact or touch, is called
A) Hydrotropism
B) Thigmotropism
C) Phototropism
D) Getotropism

Answer:
B) Thigmotropism