CBSE Class 7 - Science - Chapter 17 - Forests - Our Lifeline (Worksheet)(#cbsenotes)(#eduvictors)

Science - Chapter 17 - Forests
- Our Lifeline 

(Worksheet)

Fill in the blanks with suitable words:

1. _________ is the covering of large trees that serve as a roof to shelter an area or other plants in forests.


2. ________ is an ecosystem comprising various plants, animals and micro-organisms.


3. In a forest, the _______ form the top layer, which is followed by shrubs, and then _______, which form the lowermost layer of vegetation.


4. In the forest, there is an interaction between soil, _____, air and living organisms.


5. Forests protect the soil from ________.




6. Forests are called green lungs because they maintain the balance of ________ and carbon dioxide.


7. The micro-organisms which convert the dead plants and animals to humus are known as __________.


8. All animals, whether herbivores or _________, depend ultimately on plants for food.


9. The branch part of a tree above the stem is known as the ________ of the tree.


10. The root system helps water to ________ ________ in the ground.


11. Noise pollution is less around a forest because the forest __________ the noise of the nearby highway.




Answers:
1: Canopy
2: Forest
3: tall trees, herbs
4: water
5: erosion
6: oxygen
7: decomposers
8: carnivores
9: crown
10: seep down
11: absorbs

☛See also:
 Forests - Our Lifeline - Questions and Answers

 Ch 17 Forests: Our Lifeline (MCQs)
 Ch 17 - Importance of Forest Resources