Forests: Our Lifeline Class 7 Extra Questions and Answers Science Chapter 17

Forests: Our Lifeline Class 7 Extra Questions and Answers Science Chapter 17 PDF are solved by experts and will guide students in the right direction. Students can get how to tackle different questions easily by solving the Extra Questions for Class 7 Science Question bank on a regular basis.

Class 7 Science Chapter 17 Extra Questions and Answers Water: A Precious Resource

Extra Questions for Class 7 Science Chapter 17 Forests: Our Lifeline with Answers

Forests: Our Lifeline Class 7 Extra Questions Very Short Answer Type

Question 1.
Write one food chain in forest.
Answer:
Grass → insects → frog → snake → eagle.

Question 2.
Which type of environment remains in a forest ?
Answer:
Forest environment is peaceful and a cool breeze keeps blowing because of transpiration by plants.

Question 3.
Name two trees found in forests.
Answer:
Neem, Sheesham.

Forests: Our Lifeline Class 7 Extra Questions Short Answer Type 1

Question 1.
Name some animals that live deep inside forest.
Answer:
Animals like boar, bison, jackals, porcupine, elephants live in the deeper areas of the forest.

Question 2.
What do the forests provide to the human beings?
Answer:
Many people live in the forest. Some of them may belong to different tribes. These people depend mostly on the forests. The forest provides them with food, shelter, water and medicines. In additional, human extracts timber, pulp, resin, gum etc. from forest for his use.

Question 3.
How is forest beneficial for the environment for man living nearby forest?
Answer:
Due to the surrounding forests, they receive good rainfall. The air also remain cool. Noise pollution, too is less because the forest absorbs the noise of the nearby highway.

Question 4.
What puts pressure on forest?
Answer:
Construction of roads, buildings, industrial development and increasing demand of wood create pressure on the forests.

Question 5.
Sum up the importance of forests.
Answer:
Forests provide us with oxygen. They protect soil and provide habitat to a large number of animals. Forests help in bringing good rainfall in neighbouring areas. They are a source of medicinal plants, timber and many other useful products.

Forests: Our Lifeline Class 7 Extra Questions Short Answer Type 2

Question 1.
Why are forests called green lungs?
Answer:
Plants release oxygen through the process of photosynthesis. The plants help to provide oxygen for animal respiration. They also maintain the balance of oxygen and carbon dioxide in the atmosphere. That is why forests are called green lungs.

Question 2.
Draw a figure to show the dependence of plant, soil, and decomposers in a forest.
Answer:

Forests: Our Lifeline Class 7 Extra Questions Long Answer Type

Question 1.
Why is forest called ‘dynamic living entity’?
Answer:
By harbouring greater variety of plants, the forest provides greater Opportunities for food and habitat for the herbivores. Larger number of herbivores means increased availability of food for a variety of carnivores. The wide variety of animals helps the forest to regenerate and grow. Decomposers help in maintaining the supply of nutrients to the growing plants in the forest. Therefore, the forest is a ‘dynamic living entity’ – full of life and vitality.

Hope the knowledge provided regarding the Forests: Our Lifeline Class 7 Extra Questions and Answers has helped you to the possible extent. For more info feel free to reach us and we will guide you at the earliest possibility. Stay connected to our site to avail latest updates on Extra Questions for Various Classes instantly.