{"id":16382,"date":"2021-08-10T12:05:55","date_gmt":"2021-08-10T06:35:55","guid":{"rendered":"https:\/\/apboardsolutions.guru\/?p=16382"},"modified":"2021-09-15T20:40:26","modified_gmt":"2021-09-15T15:10:26","slug":"ap-10th-class-biology-bits-chapter-9","status":"publish","type":"post","link":"https:\/\/apboardsolutions.guru\/ap-10th-class-biology-bits-chapter-9\/","title":{"rendered":"AP 10th Class Biology Bits Chapter 9 Our Environment with Answers"},"content":{"rendered":"

Practice the AP 10th Class Biology Bits with Answers<\/a> Chapter 8 Heredity on a regular basis so that you can attempt exams with utmost confidence.<\/p>\n

AP State Syllabus 10th Class Biology Bits 9th Lesson Our Environment with Answers<\/h2>\n

Concept – 1 : Introduction – Food Chain – Food web<\/span><\/p>\n

Question 1.
\nWhich of the following do plants not compete for ?
\nA) Water
\nB) Food
\nC) Space
\nD) All of the above
\nAnswer:
\nD) All of the above<\/p>\n

Question 2.
\n……………… denotes the animal’s position and its food.
\nA) Trophic level
\nB) Niche
\nC) Estuary
\nD) Cutch
\nAnswer:
\nB) Niche<\/p>\n

\"AP<\/p>\n

Question 3.
\nInsectivores feed on Aphids, Grasshopper. We can represent the statement through one of the following.
\nA) Food level
\nB) Food chain
\nC) Trophic level
\nD) Food web
\nAnswer:
\nD) Food web<\/p>\n

Question 4.
\nThe graphic representation of the feeding level of an ecosystem is …………………..
\nA) Pyramid
\nB) Biosphere
\nC) Ecological pyramid
\nD) Food chain
\nAnswer:
\nC) Ecological pyramid<\/p>\n

Question 5.
\nAny type of plant or animal material , that can be converted into energy is called …………………..
\nA) Bio energy
\nB) Biomass
\nC) Bio evolution
\nD) Bio quantity
\nAnswer:
\nB) Biomass<\/p>\n

Question 6.
\nThe sum of physical and biological factors along with their chemical interactions that effect an organism is called ……………………
\nA) Ecosystem
\nB) Atmosphere
\nC) Environment
\nD) Food chain
\nAnswer:
\nC) Environment<\/p>\n

Question 7.
\nAir, water, soil, sunlight are called ………………… factors.
\nA) Biotic
\nB) Abiotic
\nC) Chemical
\nD) Physical
\nAnswer:
\nB) Abiotic<\/p>\n

Question 8.
\nThe region of the world of living things is termed as:
\nA) Biosphere
\nB) Atmosphere
\nC) Environment
\nD) Ecqsystem
\nAnswer:
\nA) Biosphere<\/p>\n

Question 9.
\nThe missing organism in food chain of grass \u2192 ? \u2192 frog \u2192 snake is :
\nA) Grasshopper
\nB) Lion
\nC) Goat
\nD) Amoeba
\nAnswer:
\nA) Grasshopper<\/p>\n

\"AP<\/p>\n

Question 10.
\nCharles Elton relates to
\nA) Embryology
\nB) Physiology
\nC) Ecology
\nD) Geology
\nAnswer:
\nC) Ecology<\/p>\n

Question 11.
\nIdentify the correct food chain.
\nA) Plant \u2192 frog \u2192 snake \u2192 grosshopper
\nB) Plant \u2192 grasshopper frog \u2192 snake
\nC) Grasshopper \u2192 plant \u2192 snake \u2192 frog
\nD) Frog \u2192 plant \u2192 grasshopper \u2192 snake
\nAnswer:
\nB) Plant \u2192 grasshopper frog \u2192 snake<\/p>\n

Question 12.
\nWhich of the following constitutes a food chain?
\nA) Grass, Wheat and Mango
\nB) Grass, Goat and Human
\nC) Goat, Cow and Elephant
\nD) Grass, Fish and Goat
\nAnswer:
\nD) Grass, Fish and Goat<\/p>\n

Question 13.
\nAn ecosystem includes
\nA) all living organisms
\nB) non-living objects
\nC) both living organisms and non-living objects
\nD) all living organisms and input of sun’s energy
\nAnswer:
\nC) both living organisms and non-living objects<\/p>\n

Question 14.
\nWhat will happen if deer is missing in the food chain given below ? Grass \u2192 Deer \u2192 Tiger
\nA) The population of tigers increases
\nB) The population of grass decreases
\nC) Tigers will start eating grass
\nD) The population of tigers decreases and the population of grass increases.
\nAnswer:
\nD) The population of tigers decreases and the population of grass increases.<\/p>\n

Question 15.
\nWhich one of the following is not a consumer ?
\nA) Giraffe
\nB) Antelope
\nC) Algae
\nD) Alligator
\nAnswer:
\nC) Algae<\/p>\n

Question 16.
\nWhich of the following is not a producer?
\nA) Grass
\nB) Zooplankton
\nC) Phytoplankton
\nD) Paddy
\nAnswer:
\nB) Zooplankton<\/p>\n

\"AP<\/p>\n

Question 17.
\nIn a food chain, the third trophic level is always occupied by :
\nA) carnivores
\nB) herbivores
\nC) decomposers
\nD) producers
\nAnswer:
\nA) carnivores<\/p>\n

Question 18.
\nWhich of the following statement is incorrect regarding producers ?
\nA) All green plants and blue green algae are producers.
\nB) Producers prepare their own food from ready made organic compounds.
\nC) Producers prepare their own food from inorganic compounds.
\nD) Plants convert solar energy into chemical energy.
\nAnswer:
\nB) Producers prepare their own food from ready made organic compounds.<\/p>\n

Question 19.
\nOrganisms which synthesise carbohydrates by using radiant energy are called:
\nA) decomposers
\nB) producers
\nC) herbivores
\nD) carnivores
\nAnswer:
\nB) producers<\/p>\n

Question 20.
\nA network of several food chains is known as :
\nA) ecosystem
\nB) food web
\nC) ecological pyramid
\nD) food chain
\nAnswer:
\nB) food web<\/p>\n

Question 21.
\nChoose the right one for the empty box.
\n\"AP
\nA) Grasshopper
\nB) Snake
\nC) Frog
\nD) Hawk
\nAnswer:
\nB) Snake<\/p>\n

Question 22.
\nWhich of the following is biotic factor ?
\nA) Air
\nB) Soil
\nC) Plant
\nD) Sunlight
\nAnswer:
\nC) Plant<\/p>\n

Question 23.
\n……………. forms food web.
\nA) Chains
\nB) Food chains
\nC) Abotic factors
\nD) Biotic factors
\nAnswer:
\nB) Food chains<\/p>\n

\"AP<\/p>\n

Question 24.
\nThe type of forests are determined by ………………..
\nA) Temperature, sunlight
\nB) Sunlight, plants
\nC) Temperature, rainfall
\nD) Light, surroundings
\nAnswer:
\nA) Temperature, sunlight<\/p>\n

Question 25.
\n……………… indicates the relationship of food.
\nA) Food web
\nB) Food chain
\nC) Niche
\nD) Habitat
\nAnswer:
\nA) Food web<\/p>\n

Question 26.
\n………………. denotes the mode of life of an organism in the food web.
\nA) Niche
\nB) Food chain
\nC) Pyramid of biomass
\nD) Pyramid of numbers
\nAnswer:
\nA) Niche<\/p>\n

Question 27.
\nIn the food chain which shows the human being, big fish and the small fish, the last place is occupied by …………………….
\nA) Fish
\nB) Moss
\nC) Human being
\nD) Whale
\nAnswer:
\nC) Human being<\/p>\n

Question 28.
\nWhich of the following should be less, so that the top most carnivores will get more energy ?
\nA) Producers
\nB) Trophic levels
\nC) Consumers
\nD) Moss
\nAnswer:
\nB) Trophic levels<\/p>\n

Question 29.
\nThe material which the organism can’t digest …………………
\nA) Cellulose
\nB) Fats
\nC) Cellulose, lignin
\nD) Proteins
\nAnswer:
\nC) Cellulose, lignin<\/p>\n

Question 30.
\nThe flow of materials between organisms and their environment is called ……………………..
\nA) Nitrogen cycle
\nB) Carbon cycle
\nC) Bio geochemical cycle
\nD) Hydrogen cycle
\nAnswer:
\nC) Bio geochemical cycle<\/p>\n

\"AP<\/p>\n

Question 31.
\nWhich of the following can convert the absorbed (Solar energy) sunlight into chemical energy ?
\nA) Animals
\nB) Decomposers
\nC) Producers
\nD) Carnivores
\nAnswer:
\nC) Producers<\/p>\n

Question 32.
\nThe pyramid of numbers is always upright. If it changes …………………..
\ni) the number of producers will be more in the trophic level.
\nii) a tree is the producer.
\niii) it is always upright. Change does not occur.
\niv) Producers are at the base only though the pyramid is in any form.
\nA) i only
\nB) i, ii, iii
\nC) i, ii, iv
\nD) All are correct
\nAnswer:
\nC) i, ii, iv<\/p>\n

Question 33.
\nConsider the following.
\na) Photosynthesis is the important life process for all plants.
\nb) Abiotic factors such as CO2<\/sub>, light and water are not necessary for organisms.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a and b are false
\nAnswer:
\nB) a is true, b is false<\/p>\n

Question 34.
\nConsider the following.
\na. It would be better to reduce the reproductive capacity of male insect organisms.
\nb. Crop rotation method is the best practice.
\nA) a, b both are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a and b are false
\nAnswer:
\nA) a, b both are true<\/p>\n

Question 35.
\nWhat does a food chain always start with ?
\nA) Herbivore
\nB) Carnivore
\nC) Producer
\nD) Predator
\nAnswer:
\nC) Producer<\/p>\n

Question 36.
\nThe food chain ends with ………………..
\nA) Producer
\nB) Saprophyte
\nC) Decomposer
\nD) Consumer
\nAnswer:
\nD) Consumer<\/p>\n

Question 37.
\nThe number of levels in a food chain comprises mostly
\nA) 3
\nB) 4
\nC) 5
\nD) 2
\nAnswer:
\nB) 4<\/p>\n

\"AP<\/p>\n

Question 38.
\n……………… denotes the relationship between the biotic factors.
\nA) Food pyramid
\nB) Food quantity
\nC) Food chain
\nD) Producers
\nAnswer:
\nC) Food chain<\/p>\n

Question 39.
\nWhich of the following indicates the transfer of energy from one organism to the other ?
\nA) Food pyramid
\nB) Path of energy flow
\nC) Path of energy loss
\nD) Food chain
\nAnswer:
\nD) Food chain<\/p>\n

Question 40.
\nCorrect statement of Charles Elton.
\nA) Carnivores at the top of the pyramid.
\nB) Energy trapping is high at the top of the pyramid
\nC) No producers at the top of the pyramid
\nA) A only
\nB) Both A and B
\nC) C only
\nD) Both A and C
\nAnswer:
\nD) Both A and C<\/p>\n

Question 41.
\nBetween grass and grasshopper food chain ends with
\nA) Producer
\nB) Saprophyte
\nC) Decomposers
\nD) Consumers
\nAnswer:
\nD) Consumers<\/p>\n

Question 42.
\nYou have prepared a work sheet for collecting information on observing different food chains. One of the following is important component in the work sheet.
\nA) Details of group members
\nB) Food relationship
\nC) Names of animals
\nD) Number of carnivores
\nAnswer:
\nB) Food relationship<\/p>\n

Question 43.
\nConsider the following.
\na. The place of organism in a food web is called “Niche”
\nb. Niche explains the living habits and food habits of organism
\nA) Both a & b are true
\nB) a is false, b is true
\nC) Both a & b are false
\nD) a is true, b is false
\nAnswer:
\nA) Both a & b are true<\/p>\n

Question 44.
\nThe primary consumer is …………………
\nA) Rabbit
\nB) Tiger
\nC) Frog
\nD) Snake
\nAnswer:
\nA) Rabbit<\/p>\n

\"AP<\/p>\n

Question 45.
\nChoose the right one for the empty box.
\n\"AP
\nA) Grasshopper
\nB) Snake
\nC) Frog
\nD) Hawk
\nAnswer:
\nB) Snake<\/p>\n

Question 46.
\nGrass, grass hopper, snake, frog, eagle – find out the correct flow chart.
\nA) grass \u2192 grass hopper \u2192 frog \u2192 snake \u2192 eagle
\nB) grass \u2190 grass hopper \u2190 frog \u2190 snake \u2190 eagle
\nC) grass hopper \u2192 eagle \u2192 frog \u2192 grass \u2192 snake
\nD) eagle \u2192 snake \u2192 grass hopper \u2192 frog \u2192 grass
\nAnswer:
\nA) grass \u2192 grass hopper \u2192 frog \u2192 snake \u2192 eagle<\/p>\n

Concept – 2 : Ecological Pyramids<\/span><\/p>\n

Question 47.
\n……………… denotes the relationship among the organisms in a food chain.
\nA) Giza pyramid
\nB) Food web
\nC) Ecological pyramid
\nD) Trophic level
\nAnswer:
\nC) Ecological pyramid<\/p>\n

Question 48.
\nA grass land ecosystem had grass, grasshopper, snake, rabbit, frog and eagle. Then what are the primary consumers ?
\nA) Grasshopper and frog
\nB) Grasshopper and snake
\nC) Grasshopper and rabbit
\nD) Grasshopper and eagle
\nAnswer:
\nC) Grasshopper and rabbit<\/p>\n

Question 49.
\nPyramid: Egypt:: Ecological pyramids:
\nA) Odum
\nB) Francis Bacon
\nC) Charles Darwin
\nD) Charles Elton
\nAnswer:
\nD) Charles Elton<\/p>\n

Question 50.
\nBy which of the following processes, biomass will be formed in organisms?
\nA) Respiration
\nB) Light respiration
\nC) Photosynthesis
\nD) Carbon cycle
\nAnswer:
\nC) Photosynthesis<\/p>\n

Question 51.
\nWhen biomass is used for energy production, that is called ………………….
\nA) Bio fuel
\nB) Bio utilisation
\nC) Biosphere
\nD) Food pyramid
\nAnswer:
\nA) Bio fuel<\/p>\n

\"AP<\/p>\n

Question 52.
\nThe transfer of energy from one trophic level to other trophic level
\nA)20 – 30%
\nB) 30 – 40 %
\nC) 50 – 70 %
\nD) 10 – 20 %
\nAnswer:
\nD) 10 – 20 %<\/p>\n

Question 53.
\nThe ……………. feed on phytoplanktons.
\nA) Zoo planktons
\nB) Producers
\nC) Biomass
\nD) Insectivorous plants
\nAnswer:
\nA) Zoo planktons<\/p>\n

Question 54.
\nWhat happens if plants shed their leaves in Autumn season ?
\nA) Loss of energy occur
\nB) Plants will die
\nC) Decomposers will be destroyed
\nD) Loss of biomass occur
\nAnswer:
\nD) Loss of biomass occur<\/p>\n

Question 55.
\nObserve a and b statements.
\na. The number of organisms in a food chain can be represented graphically in a pyramid.
\nb. Each bar represents the number of individuals at each trophic level in the food chain.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a and b are false
\nAnswer:
\nA) Both a and b are true<\/p>\n

Question 56.
\nIn the figure given below, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available ?
\n\"AP
\nA) T4<\/sub>
\nB) T2<\/sub>
\nC) T1<\/sub>
\nD) T3<\/sub>
\nAnswer:
\nC) T1<\/sub><\/p>\n

Question 57.
\nThe organic material of biological origin that is ultimately derived from the fixation of carbon dioxide by trapping solar energy during photosynthesis is called:
\nA) Biomass
\nB) Biofuel
\nC) Both A and B
\nD) Pyramid
\nAnswer:
\nA) Biomass<\/p>\n

Question 58.
\nWhich of the following represents a food chain in a pond ecosystem ?<\/p>\n\n\n\n\n\n\n\n
Primary producers<\/td>\nPrimray consumers<\/td>\nSecondary consumers<\/td>\n<\/tr>\n
A) Green algae<\/td>\nfish<\/td>\nmosquito larvae<\/td>\n<\/tr>\n
B) Fish<\/td>\ngreen algae<\/td>\nmosquito larvae<\/td>\n<\/tr>\n
C) Mosquito larvae<\/td>\nfish<\/td>\ngreen algae<\/td>\n<\/tr>\n
D) Green algae<\/td>\nmosquito larvae<\/td>\nfish<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Answer:
\nD) Green algae mosquito larvae fish<\/p>\n

\"AP<\/p>\n

Question 59.
\nIn an aquatic ecosystem, the biomass of phytoplankton is :
\nA) quite negligible
\nB) greater
\nC) lesser
\nD) none of these
\nAnswer:
\nC) lesser<\/p>\n

Question 60.
\nObserve the a and b statements.
\na. In the pyramid of numbers, as we move to top position the number of organisms decreases.
\nb. As the number of organisms decrease, the quantity of organisms also decrease.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a arid b are false
\nAnswer:
\nA) Both a and b are true<\/p>\n

Question 61.
\nFind out the wrong one in the given flow chart.
\n\"AP
\nA) 1, 2 correct
\nB) 2, 3, 4 correct
\nC) 2, 4 correct
\nD) All are correct
\nAnswer:
\nD) All are correct<\/p>\n

Question 62.
\n\"AP
\nIn this food chain, the organism which belongs to the second trophic level is………………
\nA) Snake
\nB) Plant
\nC) Grasshopper
\nD) Frog
\nAnswer:
\nC) Grasshopper<\/p>\n

Question 63.
\nConsider the following.
\na) Aphids are small in size but their number is more.
\nb) Wood peckers eat aphids. Their number is less, but size is large.
\nA) Both a & b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a & b are false
\nAnswer:
\nA) Both a & b are true<\/p>\n

Question 64.
\nAccording to Charles Elton
\nA) carnivores are atthe top ofthe pyramid
\nB) energy trapping is high at the top of the pyramid
\nC) no producers at the top of the pyramid
\nD) A and C
\nAnswer:
\nD) A and C<\/p>\n

Question 65.
\nIf we invert the pyramid of numbers …………… is formed.
\nA) Pyramid of biomass
\nB) Pyramid of energy
\nC) Pyramid of Egypt
\nD) Biomass
\nAnswer:
\nA) Pyramid of biomass<\/p>\n

\"AP<\/p>\n

Question 66.
\nThe plants float on the surf ace water of the sea ……………………
\nA) Phytoplanktons
\nB) Zoo planktons
\nC) Producers
\nD) Pyramid of number
\nAnswer:
\nA) Phytoplanktons<\/p>\n

Question 67.
\nPhytoplanktons means
\nA) Plants growing on river side
\nB) Plants growing on surface of water
\nC) Plants submerged in water
\nD) Plants growing on trees
\nAnswer:
\nB) Plants growing on surface of water<\/p>\n

Question 68.
\nMatch the items of first line with second line.
\nFirst line :
\n1. Charles Elton
\n2. Charles Darwin
\n3. Lavoisier<\/p>\n

Second line:
\na) Respiration is a combustion process
\nb) Ecosystem
\nc) Evolution
\nA) 1 – b, 2 – c 3 – a
\nB) 1 – b, 2 – a 3 – c
\nC) 1 – c 2 – a 3 – b
\nD) 1 – c 2 – b 3 – a
\nAnswer:
\nA) 1 – b, 2 – c 3 – a<\/p>\n

Question 69.
\nConsumers are divided based on the factors given below in an ecosystem .
\nA) Consumed food
\nB) Trophic level
\nC) Consumed food, trophic level
\nD) Energy
\nAnswer:
\nC) Consumed food, trophic level<\/p>\n

Question 70.
\nConsider the following.
\na. Carnivores are on the top of pyramid of number.
\nb. These are large in number and size.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) Both a and b are false
\nD) a is false, b is true
\nAnswer:
\nB) a is true, b is false<\/p>\n

Question 71.
\nConsider the following.
\na. Biomass is prominent in terrestrial ecosystem
\nb. Pyramid of biomass is always upright
\nA) Both a and b are true
\nB) a is true, b is false
\nC) b is true, a is false
\nD) Both a and b are false
\nAnswer:
\nC) b is true, a is false<\/p>\n

Question 72.
\nObserve the following a and b statements:
\na) The number of organisms decrease as we move from producers to consumers.
\nb) Theconsumersareplacedinthefront position in a food chain.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a and b are false
\nAnswer:
\nB) a is true, b is false<\/p>\n

\"AP<\/p>\n

Question 73.
\nObserve the a and b statements.
\na. The less energy will be available for the higher consumers.
\nb. Producers will get more energy.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a and b are false
\nAnswer:
\nA) Both a and b are true<\/p>\n

Question 74.
\nObserve the a and b statements :
\na) Producers are represented atthebase of ‘the pyramid’.
\nb) The top of the pyramid is represented as empty.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a and b are false
\nAnswer:
\nA) Both a and b are true<\/p>\n

Question 75.
\nIf a grasshopper is eaten by a frog, then the energy transfer will be from :
\nA) producer to decomposer
\nB) producer to primary consumer
\nC) primary consumer to secondary consumer
\nD) primary consumer to tertiary consumer
\nAnswer:
\nC) primary consumer to secondary consumer<\/p>\n

Question 76.
\nIn the food chain below, if the amount of energy available at fourth trophic level is 5 KJ, what is the energy available at the producer level ?
\nGrass \u2192 Grasshopper \u2192 Frog \u2192 Snake \u2192 Hawk
\nA) 500 KJ
\nB) 50 KJ
\nC) 5000 KJ
\nD) 5 KJ
\nAnswer:
\nC) 5000 KJ<\/p>\n

Question 77.
\nThe concept of ‘Ecological Pyramid’ was first proposed by……………….
\nA) Lindemann
\nB) Lamarck
\nC) Steel
\nD) Charles Elton
\nAnswer:
\nD) Charles Elton<\/p>\n

Question 78.
\nFill the empty box choosing the right one from the following.<\/p>\n\n\n\n\n\n
Type of pyramid<\/td>\nBase<\/td>\n<\/tr>\n
Pyramid of number<\/td>\nNumber of organisms<\/td>\n<\/tr>\n
?<\/td>\nAmount of energy<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

A) Geographical pyramid
\nB) Pyramid of energy
\nC) Pyramid of biomass
\nD) Giza pyramid
\nAnswer:
\nB) Pyramid of energy<\/p>\n

Question 79.
\nConsider the following.
\na. The amount of bio-mass decreases from producers to carnivores in: terrestrial ecosystem.
\nb. The amount of bio-mass decreases from producers to carnivores in aquatic ecosystem.
\nA) Both a and b are true
\nB) a is true, b is false
\nC) Both a and b are false
\nD) a is false, b is true
\nAnswer:
\nA) Both a and b are true<\/p>\n

\"AP<\/p>\n

Question 80.
\nFind out the missing thing from the table<\/p>\n\n\n\n\n\n
Type of pyramid<\/td>\nBase<\/td>\n<\/tr>\n
Pyramid of number<\/td>\nNumber of organisms<\/td>\n<\/tr>\n
Pyramid of energy<\/td>\n?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

A) Ecological pyramid
\nB) Flow of energy
\nC) Flow of biomass
\nD) Giza pyramid
\nAnswer:
\nB) Flow of energy<\/p>\n

Question 81.
\nFind out the pyramid with right position of the organisms.
\n\"AP
\nA) i only
\nB) i, ii,
\nC) All are correct
\nD) ii, iii.
\nAnswer:
\nB) i, ii,<\/p>\n

Question 82.
\nHerbivores disappeared from ecosystem. Find the pyramid related to that.
\n\"AP
\nAnswer:
\n\"AP<\/p>\n

Question 83.
\nConsider the following.
\na) Biomass in each trophic level is always less than the trophic level below.
\nb) Biomass is a measure of the amount of food available.
\nA) Both a & b are true
\nB) a is true, b is false
\nC) a is false, b is true
\nD) Both a & b are false
\nAnswer:
\nA) Both a & b are true<\/p>\n

Concept – 3 : The Story of Kolleru Lake<\/span><\/p>\n

Question 84.
\nIn an industrial area so many industrial effluents are released into the water. If the residues are found in the organisms of food chain it is ……………..
\nA) Bio – accumulation
\nB) Bio – oxygen
\nC) Bio – pollution
\nD) Bio – magnification
\nAnswer:
\nA) Bio – accumulation<\/p>\n

Question 85.
\nRotation of crops, Genetic strains, Sterility are the ……………… methods to prevent the pests.
\nA) Bio – accumulation
\nB) Bio – magnification
\nC) Biological control
\nD) Environmental ethics
\nAnswer:
\nC) Biological control<\/p>\n

Question 86.
\nKolleru lake discharges its water into the Bay of Bengal through the ………………. channel.
\nA) River Narmada
\nB) River Godavari
\nC) Maddileru channel
\nD) Upputeru channel
\nAnswer:
\nD) Upputeru channel<\/p>\n

Question 87.
\nKolleru lake attracts migrating birds from Asia and Eastern Europe of about ……………. birds per year.
\nA) 25,00,000 birds
\nB) 20,00,000 birds
\nC) 35,00,000 birds
\nD) 15,00,000 birds
\nAnswer:
\nB) 20,00,000 birds<\/p>\n

\"AP<\/p>\n

Question 88.
\nExpand BOD.
\nA) Biological Oxygen Deficiency
\nB) Basic Organic Dominance
\nC) Biological Oxygen Demand
\nD) Basal Organic Demand
\nAnswer:
\nC) Biological Oxygen Demand<\/p>\n

Question 89.
\nIn 1999 November, the Government of Andhra Pradesh had declared the Kolleru lake as …………………
\nA) Bird sanctuary
\nB) Wild life sanctuary
\nC) National park
\nD) Pisciculture centre
\nAnswer:
\nA) Bird sanctuary<\/p>\n

Question 90.
\nThe Mercury, Arsenic and Lead in pesticides ………………
\nA) do not break down
\nB) break down
\nC) increases purity
\nD) can’t accumulate
\nAnswer:
\nA) do not break down<\/p>\n

Question 91.
\nEntry of pollutants into a food chain is …………………….
\nA) Bio-accumulation
\nB) Bio-magnification
\nC) Bio-mass
\nD) Bio-degradation
\nAnswer:
\nA) Bio-accumulation<\/p>\n

Question 92.
\nThe bio indicators of heavy metal pollutants
\nA) Cadmium
\nB) Fishes
\nC) Aquatic animals
\nD) Mercury
\nAnswer:
\nB) Fishes<\/p>\n

Question 93.
\nThe tendency of pollutants to concentrate as they move from one trophic level to the next is ……………………
\nA) Bio – control
\nB) Bio – magnification
\nC) Bio – accumulation
\nD) Bio – remediation
\nAnswer:
\nB) Bio – magnification<\/p>\n

Question 94.
\nThe common scale carp which is used as food in Edulabad Water Reservoir is
\nA) Cyprinus Carpio
\nB) Mrigala Mrigala
\nC) Cutla Cutla
\nD) Cyprinus Cyprinus
\nAnswer:
\nA) Cyprinus Carpio<\/p>\n

\"AP<\/p>\n

Question 95.
\nWhat happened in Kolleru lake due to over alkalinity and mud formation?
\nThe percentage of O2<\/sub> decrease b. More increase in Biological Oxygen Demand and impact on aquatic organisms.
\nA) a is true
\nB) b is true
\nC) Both a and b are true
\nD) Both a and b are false
\nAnswer:
\nC) Both a and b are true<\/p>\n

Concept – 4 : Edulabad Water Reservoir<\/span><\/p>\n

Question 96.
\nThe metal which causes Minamata disease is ………………….
\nA) Iron
\nB) Mercury
\nC) Zinc
\nD) Arsenic
\nAnswer:
\nB) Mercury<\/p>\n

Question 97.
\nWhich of the following is not an alternative to pesticides ?
\nA) Rotation of crops
\nB) Sterility
\nC) Genetic strains
\nD) Spray of pesticides
\nAnswer:
\nD) Spray of pesticides<\/p>\n

Question 98.
\nMany pollutants are released into water from an industrial area. If residue appears in living organisms of a food chain, then it is called
\nA) Bio remediation
\nB) Bio mimicry
\nC) Bio pollution
\nD) Bio magnification
\nAnswer:
\nD) Bio magnification<\/p>\n

Question 99.
\nThe aquatic biota is being contaminated with heavy metals due to industrialization and anthropogenic activities.
\nThe above statement is ……………………..
\nA) Correct
\nB) Wrong
\nC) Not accurate
\nD) Can’t say
\nAnswer:
\nA) Correct<\/p>\n

Question 100.
\nYou observed fish in the industrial areas. Some of the following heavy metals are found in them.
\ni) lead
\nii) cadmium
\niii) nickel
\nA) i only
\nB) i, ii only
\nC) i, iii only
\nD) All are correct
\nAnswer:
\nD) All are correct<\/p>\n

Question 101.
\nArsenic elements are seen in milk of cow. The correct word that explains it.
\nA) Bio control
\nB) Bio accumulation
\nC) Bio remediation
\nD) Bio magnification
\nAnswer:
\nD) Bio magnification<\/p>\n

\"AP<\/p>\n

Question 102.
\nThe following is not a reason for imbalance in ecosystem.
\nA) Deforestation
\nB) Same crop harvest
\nC) Crop rotation
\nD) Constructing dams
\nAnswer:
\nC) Crop rotation<\/p>\n

Question 103.
\nLatha says excessive nutrient addition, especially from anthrppogenic sources, led to explosive weed growth. Sarala denied Latha’s hypothesis.
\nA) Latha is wrong
\nB) Sarala is wrong
\nC) Both are wrong
\nD) Latha is correct
\nAnswer:
\nD) Latha is correct<\/p>\n

Question 104.
\nThe bio-accumulated components of pesticides which entered the food chain are :
\nA) Arsenic
\nB) Mercury
\nC) Lead
\nD) All of the above
\nAnswer:
\nD) All of the above<\/p>\n

Question 105.
\nWhich of the following is not a biodegradable substance ?
\nA) Cotton
\nB) Animal bones
\nC) Aluminuim foil
\nD) Wood
\nAnswer:
\nC) Aluminuim foil<\/p>\n

Question 106.
\nThe physiological disorder due to accumulation of heavy metals into human beings through food chain is
\nA) Renal damage
\nB) Tooth decay
\nC) Loss of eye sight
\nD) Heart diseases
\nAnswer:
\nA) Renal damage<\/p>\n

Question 107.
\nIn Japan in 1956, the Minamata disease was caused by this highly toxic chemical in water.
\nA) Methyl Isocyanide
\nB) Mercury Isocyanide
\nC) Potassium Isocyanide
\nD) Methyl Mercury
\nAnswer:
\nD) Methyl Mercury<\/p>\n

Concept – 5 : Sparrow Campaign<\/span><\/p>\n

Question 108.
\nThe cruel campaign against which bird is initiated in 1958 in China ?
\nA) Parrots
\nB) Sparrows
\nC) Crows
\nD) Vultures
\nAnswer:
\nB) Sparrows<\/p>\n

\"AP<\/p>\n

Question 109.
\n“Sparrow Campaign” incident occurred in
\nA) China
\nB) Japan
\nC) Korea
\nD) India
\nAnswer:
\nA) China<\/p>\n

Question 110.
\nThese insects population grew due to killing of sparrows in China in 1958.
\nA) Cockroach
\nB) Locusts
\nC) Earthworm
\nD) B & C
\nAnswer:
\nB) Locusts<\/p>\n

Question 111.
\nKilling of sparrows resulted in
\nA) Controlling of locusts
\nB) Controlling of human population
\nC) Great Chinese famine
\nD) Production of food
\nAnswer:
\nC) Great Chinese famine<\/p>\n

Question 112.
\nWhat did people do in Sparrowg Campaign in China ?
\nA) Nests were torn down
\nB) Eggs were broken
\nC) Nestlings were killed
\nD) All of the above
\nAnswer:
\nD) All of the above<\/p>\n

Concept – 6 : Steps towards Prevention<\/span><\/p>\n

Question 113.
\nBan all pesticides, this means that
\nA) Control on usage of pesticides
\nB) Prevention of pesticides
\nC) Promote eco friendly agricultural practices
\nD) Stop bio chemical factories
\nAnswer:
\nC) Promote eco friendly agricultural practices<\/p>\n

Question 114.
\nThe correct way for facilitating shelter for growing population.
\nA) Destruction of forests and making shelter
\nB) Building shelters at sea – shore area
\nC) Making habitat without destructing eco-system
\nD) Converting marshy land into habitat
\nAnswer:
\nC) Making habitat without destructing eco-system<\/p>\n

\"AP<\/p>\n

Question 115.
\nSujatha asked to cut grass and green plants to keep the surroundings clean. This is opposed by Raffee. Why ?
\nA) Need more labour
\nB) Takes more time
\nC) Disturbs equilibrium
\nD) Artificial environment
\nAnswer:
\nC) Disturbs equilibrium<\/p>\n

Question 116.
\nA farmer introduced lizards in his field. The phenomenon is …………………..
\nA) The method of environmental ethics
\nB) Bio – control
\nC) Bio – accumulation
\nD) Bio – magnification
\nAnswer:
\nB) Bio – control<\/p>\n","protected":false},"excerpt":{"rendered":"

Practice the AP 10th Class Biology Bits with Answers Chapter 8 Heredity on a regular basis so that you can attempt exams with utmost confidence. AP State Syllabus 10th Class Biology Bits 9th Lesson Our Environment with Answers Concept – 1 : Introduction – Food Chain – Food web Question 1. Which of the following …<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[12],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/posts\/16382"}],"collection":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/comments?post=16382"}],"version-history":[{"count":0,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/posts\/16382\/revisions"}],"wp:attachment":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/media?parent=16382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/categories?post=16382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/tags?post=16382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}