Practice the AP 7th Class Science Bits with Answers Chapter 15 Soil: Our Life on a regular basis so that you can attempt exams with utmost confidence.
AP State Syllabus 7th Class Science Bits 15th Lesson Soil: Our Life with Answers
Choose the correct answer.
Question 1.
We should use clay idols and celebrate festivals in
A) villages
B) cities
C) an ecofriendly way
D) a happy environment.
Answer:
C) an ecofriendly way
Question 2.
Chemical colours of idols damage our
A) faith
B) culture
C) goal
D) environment
Answer:
D) environment
Question 3.
Soil is a good
A) habitat
B) material
C) source for plant
D) living place for snails
Answer:
A) habitat
Question 4.
Soil contains
A) Waste material
B) Humidity
C) Rocks
D) Minerals
Answer:
D) Minerals
Question 5.
This soil layer is made up of humus
A) R Horizon
B) A Horizon
C) B Horizon
D) C Horizon
Answer:
B) A Horizon
Question 6.
Soil is formed from
A) Rocks
B) Sand
C) Clay
D) Pebbles
Answer:
A) Rocks
Question 7.
Castor can be grown in
A) Black soil
B) Sandy soil
C) Red soil
D) All the soils
Answer:
C) Red soil
Question 8.
Percolation rate of water is highest in
A) Rocky soil
B) Black soil
C) Sandy soil
D) Clayey soil
Answer:
C) Sandy soil
Question 9.
Percolation rate of water is lowest in
A) Black soil
B) Sandy soil
C) Clayey soil
D) All the above
Answer:
C) Clayey soil
Question 10.
Water holding capacity of soil depends on
A) Soil type
B) Rain
C) Place
D) None
Answer:
A) Soil type
Question 11.
Below the ‘O’ Horizon and above the ‘E’ Horizon this is found
A) B Horizon
B) A Horizon
C) E Horizon
D) R Horizon
Answer:
B) A Horizon
Question 12.
Percolation rate is highest in
A) Sandy soil
B) Clay
C) Loam
D) All
Answer:
A) Sandy soil
Question 13.
Removal of top soil by wind, water is called
A) soil profile
B) soil fertility
C) percolation
D) soil erosion
Answer:
D) soil erosion
Question 14.
Wheat, gram, and paddy are grown in
A) Sandy soil
B) Black soil
C) Clay and loam
D) All
Answer:
C) Clay and loam
Question 15.
Water holding capacity of soil depends on
A) soil erosion
B) soil type
C) fertility
D) conservation
Answer:
B) soil type
Question 16.
This is called regolith
A) R Horizon
B) C Horizon
C) A Horizon
D) O Horizon
Answer:
B) C Horizon
Question 17.
This is called sub soil
A) B Horizon
B) E Horizon
C) R Horizon
D) O Horizon
Answer:
A) B Horizon
Question 18.
Study of soil is called
A) Morphology
B) Pedology
C) Biology
D) Ecology
Answer:
B) Pedology
Question 19.
Before constructing multistoreyed buildings, bridges and dams engineers test the ……..
A) soil profile
B) mineral deposits
C) bedrock
D) rainfall
Answer:
A) soil profile
Question 20.
Rotation of crops retains
A) soil profile
B) soil erosion
C) soil fertility
D) humus
Answer:
C) soil fertility
Question 21.
These vessels are made up of
A) Steel
B) Wood
C) Clay
D) Copper
Answer:
C) Clay
Question 22.
Clay loam and sand are types of
A) minerals
B) metals
C) soil
D) stones
Answer:
C) soil
Question 23.
Clay and loam are suitable for growing
A) wheat
B) gram
C) paddy
D) all of these
Answer:
D) all of these
Question 24.
Cotton is grown in
A) sandy
B) clay
C) sandy loam
D) heavy loam
Answer:
C) sandy loam
Question 25.
The factors responsible for soil erosion
A) wind
B) water
C) deforestation
D) all of these
Answer:
D) all of these
Question 26.
Large size particles are present in this soil
A) sandy soil
B) clay soil
C) loam
D) heavy loam
Answer:
A) sandy soil
Question 27.
It is also called top soil
A) A-horizon
B) B-horizon
C) C-horizon
D) R-horizon
Answer:
A) A-horizon
Question 28.
Animals plants and microbes activities are more in this horizon
A) A-horizon
B) E-horizon
C) C-horizon
D) O-horizon
Answer:
A) A-horizon
Question 29.
The right sequence of horizons of the soil from top to bottom is
A) A, B, C, E, O, R
B) O, A, E, B, C, R
C) C, A, B, O, R, E
D) R, C, B, E, A, O
Answer:
B) O, A, E, B, C, R
Question 30.
Making pots by using soil is called
A) Bidri
B) Kalamkari
C) Pottary
D) None of these
Answer:
C) Pottary
Question 31.
Through this experiment what can we find out?
A) Soil erosion
B) Soil profile
C) Soil fertility
D) Percolation rate of soil
Answer:
D) Percolation rate of soil
Question 32.
The following is a soil conservation method
A) Planting trees
B) Crop rotation
C) Growing grass plants
D) All of these
Answer:
D) All of these
Question 33.
What happens if same type of crop is cultivated in same soil every year?
A) Soil fertility increases
B) Soil fertility decreases
C) No change
D) None of the above
Answer:
B) Soil fertility decreases
Question 34.
Read the statements:
P : Water percolation rate is more to sandy soil.
Q : Water percolation rate is more to loamy soil.
A) Only P is correct
B) Only Q is correct
C) P & Q are correct
D) P & Q are wrong
Answer:
A) Only P is correct
Question 35.
Which of the following is the topmost layer of soil?
A) “O” Horizon
B) “E” Horizon
C) “A” Horizon
D) “B” Horizon
Answer:
A) “O” Horizon