NCERT Class VII Science Solutions: Chapter 9 – Soil Part 1

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MULTIPLE CHOICE QUESTIONS

Question 1:

The microorganisms present in the soil require moisture (water) and nutrients for growth and survival. Choose from the options below the habitat (place) where the soil has plenty of water and nutrients.

1. Desert

2. Forest

3. Open field

4. Cricket ground

Answer: B

Question 2:

Availability of water and minerals in the soil for maximum absorption by roots is in the -

1. B-horizon

2. C-horizon

3. A-horizon

4. surface of soil

Answer: C

Question 3:

Soil conservation measures are mainly aimed at protecting which of the following?

1. Plants

2. Top soil

3. Sub soil

4. Soil organisms

Answer: B

Question 4:

Read the following statements with reference to soil.

1. Weathering is a very fast process of soil formation.

2. Percolation of water is faster in sandy soils.

3. Loamy soil contains only sand and clay.

4. Top soil contains the maximum amount of humus.

Choose the correct statements from the above.

1. (ii) and (iv)

2. (i) and (iii)

3. (ii) and (iii)

4. (i) and (ii)

Answer: A

VERY SHORT ANSWER QUESTIONS

Question 5:

Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.

Rock, Clay, Sand, Gravel, Silt

Answer:

Rock > Gravel > Sand > Silt > Clay

Question 6:

The components of loamy soil are___________, __________and ____________.

Answer:

The components of loamy soil are sand, silt and clay.