Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store

NCERT Exemplar for Class 7 Science Solutions Chapter 9 Soil

ffImage
Last updated date: 23rd May 2024
Total views: 477.3k
Views today: 6.77k

Vedantu’s NCERT Exemplar Solutions of Chapter 9- Soil of Class 7 Science

Free PDF download of NCERT Exemplar for Class 7 Science Chapter - 9 Soil solved by expert Science teachers on Vedantu.com as per NCERT (CBSE) Book guidelines. All Chapter - 9 Soil exercise questions with solutions to help you to revise the complete syllabus and score more marks in your examinations.


You can also download NCERT Solutions for Class 7 Science to help you to revise the complete Syllabus and score more marks in your examinations.

Popular Vedantu Learning Centres Near You
centre-image
Mithanpura, Muzaffarpur
location-imgVedantu Learning Centre, 2nd Floor, Ugra Tara Complex, Club Rd, opposite Grand Mall, Mahammadpur Kazi, Mithanpura, Muzaffarpur, Bihar 842002
Visit Centre
centre-image
Anna Nagar, Chennai
location-imgVedantu Learning Centre, Plot No. Y - 217, Plot No 4617, 2nd Ave, Y Block, Anna Nagar, Chennai, Tamil Nadu 600040
Visit Centre
centre-image
Velachery, Chennai
location-imgVedantu Learning Centre, 3rd Floor, ASV Crown Plaza, No.391, Velachery - Tambaram Main Rd, Velachery, Chennai, Tamil Nadu 600042
Visit Centre
centre-image
Tambaram, Chennai
location-imgShree Gugans School CBSE, 54/5, School road, Selaiyur, Tambaram, Chennai, Tamil Nadu 600073
Visit Centre
centre-image
Avadi, Chennai
location-imgVedantu Learning Centre, Ayyappa Enterprises - No: 308 / A CTH Road Avadi, Chennai - 600054
Visit Centre
centre-image
Deeksha Vidyanagar, Bangalore
location-imgSri Venkateshwara Pre-University College, NH 7, Vidyanagar, Bengaluru International Airport Road, Bengaluru, Karnataka 562157
Visit Centre
View More

Access NCERT Exemplar Solutions for Class 7 Science(Biology) Chapter 9. - Soil

Multiple Choice Questions

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.

(a) Desert

(b) Forest

(c) Open field

(d) Cricket ground

Ans: (b) Forest


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

(a) B-horizon

(b) C-horizon

(c) A-horizon

(d) surface of soil

Ans: (c) A-horizon


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

(a) Plants

(b) Topsoil

(c) Subsoil

(d) Soil organisms

Ans: (b) Top Soil


4. Read the following statements with reference to soil.

(i) Weathering is a very fast process of soil formation.

(ii) Percolation of water is faster in sandy soils.

(iii) Loamy soil contains only sand and clay.

(iv) Top soil contains the maximum amount of humus.

Choose the correct statements from the above.

(a) (ii) and (iv) 

(b) (i) and (iii)

(c) (ii) and (iii) 

(d) (i) and (ii)

Ans: (a) (ii) and (iv)


Very Short Answer Questions

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

Rock, Clay, Sand, Gravel, Silt

Ans: The following words are listed in ascending order of particle size: 

Clay < Silt < Sand < Gravel < Rock


6. The components of loamy soil are ______, ______ and ______. 

Ans: sand, slit and clay. 


7. Read the following statements and give the appropriate terms for each of them.

(a) The process of breakdown of rocks by the action of wind, water, sunlight.

Ans: Weathering

(b) Removal of top soil during heavy rains or strong winds.

Ans: Soil erosion

(c) Accumulation of wastes in the soil generated by human activity which alter the features of soil.

Ans: Soil pollution

(d) The process of movement of water into deeper layers of soil.

Ans: d) Percolation


8. Unscramble the following jumbled words related to soil.

(a) SUHUM

Ans: HUMUS

(b) ILOS FIPROLE

Ans: SOIL PROFILE

(c) ZOINORH

Ans: HORIZON

(d) MOAL

Ans: LOAM

(e) GINRHETWEA 

Ans: WEATHERING

(f) ATONIERPCL

Ans: PERCOLATION


Short Answer Questions

9. Which of the following situations – ‘A’ or ‘B’ – is advantageous for absorption of water and minerals? Why?

Situation ‘A’ : Growth and branching of roots in the C-horizon.

Situation ‘B’ : Growth and branching of roots in A and B horizons.

Ans: The absorption of water and minerals by plants is better in Situation 'B.' Horizon-A and horizon-B are the reasons behind this. Minerals, water, and humus abound in these horizons.


10. How can a farmer convert acidic soil to neutral soil?

Ans: Acidic soil can be converted to neutral soil by adding a small amount of slaked lime solution or fast lime solution to the soil.


11. Is it a good practice to remove grass and small plants that are growing in an open, unused field? Give reason to support your answer.

Ans: No, because the surface of soil is covered by the plants. The soil particles are connected by their roots, which keep them in place.


12. A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.

Ans: The soil in the upper layer is porous and easy to excavate. He was only able to dig to a depth of 5 feet because he encountered boulders and rough soil as he dug deeper, making digging difficult.


13. Locate the following zones given as boxed items in Figure 9.1 which shows a diagram of soil profile. 

Top soil, Subsoil, C-horizon, Bedrock


seo images


Ans:

 

seo images



14. Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rainwater during the journey but to his surprise he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.

Ans: Rocks and sand cover a huge portion of the desert. When rainwater falls on the ground, it instantly percolates downhill through the crevices between the sand particles. As a result, during the rainy season, the streams of water in the deserts are not clear.


15. Match the animals in Column I with their natural place of dwelling (habitat) in Column II.

Column I

Column II

a) Earthworm

i) Sand and beaches

b) Garden lizard

ii) Burrows in soil

c) Crab

iii) Deep narrow holes is dry soil

d) Rodents

iv) Surface of soil

e) Scorpion

v) Surface of shaded moist soil 

f) Snails and slugs

vi) A horizon of moist soils. 



Ans: 

Column I

Column II

a) Earthworm

vi) A horizon of moist soils

b) Garden lizard

iv) Surface of soil

c) Crab

i) Sand and beaches

d) Rodents

ii) Burrows in soil

e) Scorpion

iii) Deep narrow holes is dry soil

f) Snails and slugs

v) Surface of shaded moist soil 



Long Answer Questions

16. Continuously water-logged soils are disadvantageous for plant growth. Why? 

Ans: The foremost functions of roots are water absorption and uptake of oxygen from the pore vicinity of the soil. However, in waterlogged soils, water holds up the gaps that are present between the soil particles and further pushes the oxygen gas in the atmosphere. As a result, the roots are deprived of oxygen, which has an impact on root and plant growth.


17. Why is soil erosion relatively less in dense forests as compared to barren, open fields?

Ans: There are many trees in a dense forest. In addition, just a small amount of sunshine penetrates the land. Rainwater does not fall on the ground because of this type of leaf layering. The tree's roots link and adhere to the soil particles together.

Fields, on the other hand, are open in barren areas. The dirt is exposed to the rainwater that is falling. The clash of raindrops causes soil particles to become mobile. They are then carried away by the flow of water. Finally, the rushing water erodes the soil surface, causing erosion to worsen.


18. Gardeners gently dig up the soil around the roots of garden herbs (plants) frequently. Give reasons.

Ans: The reasons are as follows: 

a) To get rid of the weeds.

c) For the development of roots.

d) For simple water percolation.

c) To allow air to penetrate the soil's deeper layers.


19. In towns and cities, generally, the bore wells have to be dug very deep to get water as compared to bore wells dug in villages. Give suitable reasons.

Ans: As per the stated situation,  

a) This is due to excessive water consumption, which depletes groundwater.

b) Towns and cities possess large expanses of land with asphalted roads and concreted soils. As a result, rainwater is unable to penetrate into the groundwater system to replenish it. As a result, the water level beneath the ground continues to fall. Large expanses of open soil surface can be found in villages or comparable locations. At that location, there are only a few asphalt roads and concrete surfaces. As a result, a bigger surface area of soil is accessible for water or rain to quickly seep into the soil and replenish the subsurface water supply. As a result, water drains from even shallow bore wells.


20. Several terms related to soil are hidden in the squares given as Figure 9.2. Spot them and make a list. The two examples are given for you.


seo images


Ans: 

seo images


What is NCERT Exemplar for Chapter 9- Soil of Class 7 Science About?

NCERT stands for the National Council of Educational Research and Training. It is the institution that determines the syllabus and textbooks used for many state boards across the country as well as the national level board of the CBSE. Its textbooks are also used as the main ones for the JEE Main and JEE Advanced.


NCERT Exemplar is one of the workbooks that the NCERT has created. This book contains several questions based on the chapters covered in the main textbooks. The questions in the Exemplar workbooks are of a slightly higher difficulty level as compared to the questions in the regular textbooks. This is done to encourage students to get used to higher-level questions and hopefully encourage them to study harder to solve these questions. NCERT Exemplar Science is a workbook series that has questions based on the science syllabus for different years.


Benefits of Downloading Class 7 NCERT Exemplar Science Chapter 9 Solutions

The Class 7 NCERT Exemplar Science Chapter 9 Solutions provided by Vedantu have been compiled by experts in the subject matter. Therefore, you do not have to worry about the accuracy of the answers at all. You can safely use these solutions to aid in your studies for this chapter of the syllabus.

FAQs on NCERT Exemplar for Class 7 Science Solutions Chapter 9 Soil

1. What has been covered in Class 7 NCERT Exemplar Science Chapter 9 Soil solutions?

The Class 7 NCERT Exemplar Science Chapter 9 'Soil' Solutions is a list of solutions given for each question in the 9th Chapter of the NCERT Exemplar Science workbook for Class 7. The NCERT Exemplar Science workbook is one of the workbooks in the NCERT Exemplar series. This series contains questions for practice based on the various chapters that students study in different subjects. Vedantu has provided answers to all of the questions in the 9th Chapter to help students understand how to solve these questions.

2. How do Class 7 NCERT Exemplar Science Chapter 9 Soil solutions help in our studies?

The solutions given to the questions in Chapter 9 - Soil that is available on this page have been designed to help you learn how to solve the questions by using efficient methods. The solutions given in the PDF file on this page are followed by a short, simple explanation for why one particular answer was chosen over the others. The explanations help you to understand how to arrive at the correct answer. This is done by explaining how to logically approach the question and use your information to deduce the right answer. For example, the first question in this chapter asks you to draw on your knowledge of soil and nutrients found in the soil in different kinds of environments to determine which environment would have the most nutrients and water.

3. Where can I find more study resources for Class 7 NCERT Exemplar Science Chapter 9 Soil?

Vedantu has plenty of study resources to help you in your studies. This particular page contains the Solutions to the questions in Chapter 9 of the NCERT Exemplar for Class 7. These questions with solutions can help you understand how to arrive at the correct answer by logical deduction. The PDF available on this page explains not just what the correct answer is, but also why that answer is considered the correct one. Apart from this, Vedantu also has a lot of other resources to go through, which can be found by browsing through the website or app. Vedantu provides free access to resources to enhance the learning process and students can also find free chapter-wise solutions on the website.

4. How can I study for Class 7 Science?

You can study for the science part of the Class 7 syllabus by creating a study schedule that offers variety and enough breaks for leisure. The breaks are important to make sure you don't suffer from burnout in your efforts to study well and the variety in study methods is necessary to prevent boredom. By varying your study methods, you can learn properly without getting easily distracted or bored enough to give up. We, at Vedantu, suggest that you begin your studies by going through your textbooks and learning the material thoroughly first. Then, download the Class 7 NCERT Exemplar Science Chapter 9 Soil Solutions along with the Solutions to the other chapters and practice solving the questions in the NCERT Exemplar book while using these solutions as guides. Finally, find more resources to study for Class 7 NCERT Exemplar Science Chapter 9 Soil.

5. Are the Class 7 NCERT Exemplar Science Chapter 9 solutions free?

The answer is yes! The Class 7 NCERT Exemplar Science Chapter 9 Soil Solutions are available for free on this page. You can view the file on the website or app, but if you want to download it as a PDF file, you will need an account on Vedantu. Creating an account takes less than 5 minutes. All you need to do is sign up using either your mobile number or email ID. Once your account has been created, you can download the Class 7 NCERT Exemplar Science Chapter 9 Soil Solutions for free along with all other downloadable resources available on Vedantu.