Class 7 Science

Chapter 17: Forests – Our Lifeline

MCQs and Practice Worksheet

Part A: Multiple Choice Questions (MCQs)

Q1. Forests are called lifeline because they:

A. Look beautiful
B. Provide wood only
C. Support life on Earth
D. Are very large

Answer: C

---

Q2. Which of the following is the top layer of a forest?

A. Forest floor
B. Understory
C. Canopy
D. Shrub layer

Answer: C

---

Q3. Which organisms break down dead plants and animals?

A. Producers
B. Consumers
C. Decomposers
D. Herbivores

Answer: C

---

Q4. Which of the following is a decomposer?

A. Deer
B. Lion
C. Grass
D. Bacteria

Answer: D

---

Q5. Which gas is released by plants in forests?

A. Carbon dioxide
B. Nitrogen
C. Oxygen
D. Hydrogen

Answer: C

---

Q6. A simple food chain in a forest is:

A. Lion → Deer → Grass
B. Grass → Deer → Lion
C. Deer → Grass → Lion
D. Tree → Lion → Deer

Answer: B

---

Q7. Which of the following helps to prevent soil erosion?

A. Roads
B. Buildings
C. Forests
D. Rivers

Answer: C

Part B: Practice Worksheet

1. Fill in the blanks:

• Forests help maintain the __________ balance.
• The top layer of forest is called __________.
• Bacteria and fungi are __________.
• Plants and animals depend on each other. This is called __________.

2. Very Short Answer:

(a) Name one decomposer.
(b) Name one benefit of forests.
(c) What is a food chain?

3. Short Answer:

(a) What are decomposers? Why are they important?
(b) What is interdependence in forests?
(c) Write two ways to conserve forests.

4. Long Answer:

Explain the importance of forests for human beings and animals.

Answer Key (For Teachers & Parents)

Fill in the blanks:

• Ecological
• Canopy
• Decomposers
• Interdependence

Very Short Answers:

• Bacteria / Fungi
• Provide oxygen / shelter
• Transfer of food energy from one organism to another

---

Shaktimatha CBSE Learning
Class 7 Science – Chapter 17: MCQs & Worksheet

⬅️ Back to Class 7 Science Library