NCERT Solutions for Class 7 Science Chapter 9 : Soil

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NCERT Solutions for Class 7 Science Chapter 9 Soil are provided in this article. Key concepts covered in this chapter are:

Soil Profile
Soil Types
Properties of Soil
Moisture in Soil
Absorption of Water by Soil

Download PDF: NCERT Solutions for Class 7 Science Chapter 9 Soil

NCERT Solutions for Class 7 Science Chapter 9

NCERT Solutions for Class 7 Science Chapter 9 Soil are given in the following PDF:

NCERT Solutions

Class 7 Science Chapter 9 Soil: Important Topics

Soil is a material found on most of the surface of earth comprised of organic matter, minerals, gases, liquids, and organisms that together support life. It is composed of mineral particles, organic materials, air, water, and living organisms—all of which interact slowly yet constantly.

Soil Profile

Soil profile is referred to as as the vertical section of the soil from the ground surface downwards to where the soil meets the rock. It helps to examine the structure of soil. A soil profile is divided into layers which are known as horizons. The main soil horizons are A, B, C, and D.

The layers of soil can be identified by the soil colour as well as by the size of soil particles. The different layers of soil are:

Topsoil
Subsoil
Parent rock

Soil Types

A soil type is referred to as a taxonomic unit in soil science. All soils that share a certain set of well-defined properties form a distinctive soil type.

Soil is classified into four types:

Sandy soil
Silt Soil
Clay Soil
Loamy Soil

Properties of Soil

The physical properties of soil include texture, structure, density, porosity, consistency, temperature, and color.

Soil texture
Soil structure
Soil density
Soil porosity
Soil consistency (plasticity)
Soil temperature

Chapter Related Links:

Agriculture Seeds Selection Sowing	Agriculture Soil	Cyclone
Weathering	Pressure system	Tornado Bottle

Class 7 Science Additional Resources:

CBSE Class 7 Science NCERT Textbook	CBSE Class 7 Science Sample Paper	NCERT Solutions

CBSE X Related Questions

1.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

2.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes

(i), (iii) and (iv)
(i), (ii) and (iii)
(i), (ii), (iii) and (iv)
(ii), (iii) and (iv)

View Solution

3.
Which of the following group is not 'biodegradable'?

Vegetable peels, dead leaves, paper
Cow dung, leather bag, water
Polythene bag, rubber band, ball pen
Paper, fruits, bones

View Solution

4.
Assertion : In human beings, the respiratory pigment is haemoglobin present in red blood cells.
Reason (R) : Haemoglobin has a very high affinity for carbon dioxide.

Both, Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both, Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

5.
Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
Gamete carrying X chromosome from male parent.
Gamete carrying Y chromosome from male parent.

(ii) and (iii)
(i) only
(i) and (iii)
(iii) only

View Solution

6.
Identify the correct statement for spirogyra, leishmania and hydra

they reproduce sexually.
they are unicellular.
they are multicellular.
they reproduce asexually.

View Solution

NCERT Solutions for Class 7 Science Chapter 9: Soil

NCERT Solutions for Class 7 Science Chapter 9

Class 7 Science Chapter 9 Soil: Important Topics

Soil Profile

Soil Types

Properties of Soil

CBSE X Related Questions

1.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

2.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes

3.
Which of the following group is not 'biodegradable'?

4.
Assertion : In human beings, the respiratory pigment is haemoglobin present in red blood cells.
Reason (R) : Haemoglobin has a very high affinity for carbon dioxide.

6.
Identify the correct statement for spirogyra, leishmania and hydra

Similar Science Concepts

Comments

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NCERT Solutions for Class 7 Science Chapter 9: Soil

NCERT Solutions for Class 7 Science Chapter 9

Class 7 Science Chapter 9 Soil: Important Topics

Soil Profile

Soil Types

Properties of Soil

CBSE X Related Questions

1.Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

2.The reasons for excessive generation of wastes are: (i) Use and throw policy. (ii) Increased availability of packaged food. (iii) Increased construction wastes. (iv) Non-sorting of dry and wet wastes

3.Which of the following group is not 'biodegradable'?

4.Assertion : In human beings, the respiratory pigment is haemoglobin present in red blood cells. Reason (R) : Haemoglobin has a very high affinity for carbon dioxide.

6.Identify the correct statement for spirogyra, leishmania and hydra

Similar Science Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Assertion : Reaction of quick lime with water is an exothermic reaction. Reason (R): A large amount of heat is evolved on the reaction of quick lime and water.

2.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes

3.
Which of the following group is not 'biodegradable'?

4.
Assertion : In human beings, the respiratory pigment is haemoglobin present in red blood cells.
Reason (R) : Haemoglobin has a very high affinity for carbon dioxide.

6.
Identify the correct statement for spirogyra, leishmania and hydra