NCERT Class 7 Science Chapter 9 Soil Extra Questions

NCERT Class 7 Science Chapter 9 Soil Extra Questions and Answers

Soil Extra Questions

Class 7 Science Chapter 9 Extra Questions and Answers – Soil. Here in this Page Class VII Students can Learn Extra Questions & Answer 9th Chapter Science fully Inside.

We Provided Here Soil Science Chapter 9 Long Answer Type Question, Very Short Type Questions (VSA) / MCQ Type Questions, Short Type Questions (SA).

Class 7 Science Chapter 9 Extra Question with Answer – Soil

Science Chapter 9 Soil Class 7 Inside 5 Marks, 3 marks, 2 Marks & And 1 Marks Important Questions and Answers.

1) Fill in the blanks:

a) The middle layer of the soil is called ___. (B-horizon)

b) ___soil is suitable for cotton. (Sandy soil)

c) ___soil is used to make pots, toys and statues. (Clayey soil)

d) ___layer of soil can retain more water. (A-horizon)

2) Multiple choice questions:

a) If soil contains greater proportion of big particles it is called ___?

a) Clayey soil b) Sandy soil c) Loamy soil

Ans. b) Sandy soil

b)___soil has right water holding capacity for the growth plants?

a) Clayey soil b) Sandy soil c) Loamy soil

Ans. c) Loamy soil

c)___soil is suitable for gram?

a) Clayey soil b) Sandy soil c) Loamy soil

Ans. a) Clayey soil

3) Answer the following questions:

a) What is soil? Name any two types of soil?

Ans. The mixture of rock particles and humus is called soil.

Name of any two types of soil – Loamy soil, Sandy soil.

b) What is soil profile? Draw a diagram showing the layers of soil.

Ans. A vertical section through different layers of the soil is called the soil profile.

c) What is weathering? What is humus?

Ans. The process of forming soil by the breaking down of rocks by the action of wind, water and climate is called weathering.

The rotting dead matter in the soil is called humus.

d) Which type of soil is suitable for growing wheat? Why?

Ans. Clayey soil is suitable for growing wheat.

This is because clayey soil is rich in humus and is very fertile.

4) Match the items in column I with those in column II:

                       Column I

Column II

1.) Paddy a.) Hard and difficult to dig with a spade
 2.) Sandy soil b.) The middle layer
3.) Bedrock c.) Clayey soil
4.) Top soil d.) Contain greater proportion of big particles
5.) B-horizon e.) A-horizon

 

Ans. 1. – c), 2. – d), 3. – a), 4. – e), 5. – b)

5) Mark your answer as per the codes provide below:

a) A: Clayey soil is suitable for growing paddy.

R: It is rich in clay and organic matter.

I.) Both A and R are true and R is the correct explanation of A.

II.) Both A and R are true but R is not the correct explanation of A.

III.) A is true but R is false.

IV.) A is false but R is true.

V.) Both A and R are false.

Ans. I. Both A and R are true and R is the correct explanation of A.

b) A: Loamy soil is suitable for cotton.

R: It drains water easily and can hold plenty of air.

I.) Both A and R are true and R is the correct explanation of A.

II.) Both A and R are true but R is not the correct explanation of A.

III.) A is true but R is false.

IV.) A is false but R is true.

V.) Both A and R are false.

Ans. I. Both A and R are true and R is the correct explanation of A.

6) The removal of land surface by water, wind or ice is known as erosion. Plant roots firmly bind the soil. In the absence of plants, soil becomes loose. So it can be moved by wind and flowing water. Erosion of soil is more severe in areas of little or no surface vegetation, such as desert or bare lands. So, cutting of trees and deforestation should be prevented and effort should be made to increase the green areas.

a) What is erosion?

Ans. The removal of land surface by water, wind or ice is known as erosion.

b) Plant ___ firmly bind the soil. (roots)

 

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Updated: September 27, 2022 — 2:38 pm

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