9th Social Science - Book Back Answers - Economics Unit 4

9th - Social Science - Book Back Answers - Economics Unit 4 - English Medium

Tamil Nadu Board 9th Standard Social Science - Economics Unit 4: Book Back Answers and Solutions

This post covers the book back answers and solutions for Unit 4 – Economics from the Tamil Nadu State Board 9th Standard Social Science textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

By going through this material, you’ll gain a strong understanding of Economics Unit 4 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following
2 Mark Questions: Answer briefly
3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 9 students! Prepare well and aim for top scores. Thank you!

Topic: Unit 4. AGRICULTURE IN TAMIL NADU

I. Choose the correct Answer

9th Social

II. Fill in the blanks

9th Social

III. Find out the correct statement

9th Social

IV. Match the following

9th Social

V. Answer the following briefly

1. Give to examples for each food crops and non - food crops.

Food crops: Paddy, Sorghum.
Non- food crops: Coconut tree, Palm tree.

2. What are the factors responsible for changes in cropping area?

Rainfall
Available water
Weather
Market price.

3. Who monitors the quality and quantity of ground water?

The Union Water Board monitors the quality and quantity of ground water.

4. On What factors does crop cultivation depend. List out the factors on which the crop cultivation depend.

The amount of production depends on
Area
Productivity of crops.

5. Differentiate between small and marginal farmers.

SMALL FARMERS

MARGINAL FARMERS

* Small farmers cultivate 1-2 hectares of land.

* These farmers account around 14% of the total cultivators.

* Marginal farmers cultivate less than 1 hectare.

* These farmers account to around 78% of the total cultivators.

VI. Answer all the questions given under each caption

1. Give a note on the water resources of Tamil Nadu.

Tamil Nadu receives the required fresh water from northeast and southwest monsoons.
Northeast monsoon is a major source of fresh water in Tamil Nadu.
The rain water is stored in reservoirs, lakes and dams for cultivation.
When the southwest monsoon rains are high Tamil Nadu gets water from Cauvery River.
Open wells and bore wells are another sources of water in Tamil Nadu.

2. What are the problems faced by using ground water for agriculture?

Agriculture in Tamil Nadu is dependent on ground water.
Using ground water for agriculture creates many hardships too.
There would be no suffer if the amount of water taken from the underground and the amount of water that goes into the underground during the season are equal.
On the contray as the amount of water taken increase, the ground water will go down.
It is resulting in the depletion of ground water which will possibly leads to dry wells.

3. Discuss about the source of irrigation for agriculture.

North east monsoon (Oct Dec) is a major source of water for Tamil Nadu.
The North east monsoon rains are stored in reservoirs, lake and towns for cultivation.
62% of wells, 24% of canals and 14% of lakes are different water sources for irrigation.
The area of land that is irrigated from the lakes is very low.
Tamil Nadu agriculture is mainly dependent on ground water.