SEBA Class 7 Science Important Chapter 17 Forests: Our Lifeline

SEBA Class 7 Science Important Chapter 17 Forests: Our Lifeline Solutions English Medium As Per New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 7 General Science Additional Solutions and select need one. SCERT Important Solutions For Class 7 General Science Download PDF. Important Notes for Class 7 Science SCERT.

SEBA Class 7 Science Important Chapter 17 Forests: Our Lifeline

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 7 Science Additional Question Answer are part of All Subject Solutions. Here we have given SCERT Class 7 General Science Important Notes for All Chapters, You can practice these here.

Forests: Our Lifeline

Chapter: 17

IMPORTANT QUESTION ANSWER

A. Very Short Type Questions & Answers:

1. What is a canopy?

Ans: The uppermost layer in the forest formed by the branches and leaves of tall trees is called the canopy. It prevents direct sunlight and rain from reaching the forest floor.

2. Why are forests called green lungs?

Ans: Forests are called green lungs because they absorb carbon dioxide and release oxygen during photosynthesis, helping to purify the air.

3. Name any four forest products used in daily life.

Ans: Wood, paper, gum, medicinal plants.

4. What are decomposers? Give an example.

Ans: Decomposers are organisms that break down dead plants and animals. Example: Fungi, bacteria.

5. What is humus and how is it formed?

Ans: Humus is a dark-colored, nutrient-rich material formed from the decomposition of dead plant and animal matter by decomposers.

6. Why should we avoid cutting trees in forests?

Ans: Cutting trees disrupts food chains, reduces oxygen levels, causes soil erosion, and affects biodiversity.

7. What do you mean by understorey?

Ans: Understorey is the layer in the forest below the canopy, consisting of shrubs, herbs, and small plants.

8. How do forests prevent floods?

Ans: Forests slow down rainwater through their canopy and sponge-like forest floor, allowing water to seep into the ground and preventing runoff.

9. Mention any two animals and two plants commonly found in forests.

Ans: Animals: Deer, elephant. Plants: Neem, bamboo.

10. What role do microorganisms play in the forest ecosystem?

Ans: Microorganisms decompose dead matter and help in the formation of humus, thus maintaining soil fertility.

B. Fill in the Blanks:

1. Forests act as ________ lungs and help in purifying the air.

Ans: Green.

2 .The uppermost layer formed by tree branches and leaves is called the ________.

Ans: Canopy.

3. The dark-colored, nutrient-rich material formed from decayed matter is called ________.

Ans: Humus.

5. The animals that feed on dead plants and animals and convert them into humus are called ________.

Ans: Decomposers.

6. The interconnected feeding relationship among plants and animals is called a ________.

Ans: Food chain.