lesson -forest (post 9)

HELLO BOYS

WORKSHEET  

( Please copy the worksheet in your science notebook and 
solve it)

1. Fill in the blanks: -

1. ____________________ is a system comprising various plants, animals and micro-organisms.
2. In a forest, ___________________ forms the uppermost layer followed by shrubs.
3. Forests are the______________________ for the forest dwelling communities.
4. Forest_____________________________ is dark in color due to the presence of humus.
5. Wide variety of animals help ____________________ to grow & regenerate.
6. ________________________convert the dead plants and animals to humus.
7. Forest serve as__________________________ and water purifying system in nature.

2. Very short answer type questions
i. What do we call to the branched part of a tree above the stem?
ii. Name the sequence of living organisms in which one eats another.
iii. What name is given to the different horizontal layers created by different types and sizes of trees.
iv. Which part of the forest helps in recharging of the ground water.
v. Name the term used for cutting of trees at large scale.
vi. Name the practice of planting trees to save environment from the bad effects of deforestation.

3. Unscramble the Jumbled word
a. OCANYP
b. ERTOEITSDONFA
c. NSEDUETOYRR
d. ODCEPSREOMS

4. Question
Multiple Choice Questions
i. Forests are not responsible for
(a) providing medicinal plants.
(b) maintaining the flow of water into the streams.
(c) creating flood conditions.
(d) absorbing rainwater and maintaining water table.
 

(ii) Which of these is the correct food chain
a. Grass -> insects -> frog -> snake -> eagle
b. frog → eagle → insects → grass → snake
c. insects -> frog -> grass -> snake -> eagle
d. eagle -> snake -> frog -> grass-> insects

Answer 1
i. Forest
ii. trees
iii. lifeline
iv. floor
v. Forest
vi. Decomposer
vii. Green lungs

Answer 2
i. Crown
ii. Food chain
iii. understoreys
iv. Forest floor
v. Deforestation
vi. Afforestation
 Answer 3

a. Canopy
b. Deforestation
c. Understorey
d. Decomposers

Answer 4
i. (c)
ii. (a)