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7th class 12 lesson

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Cutting Trees on a large scale is known as deforestation.

a)

True

b)

False

2.

These forests remain green throughout the year.

a)

Evergreen

b)

Deciduous

c)

Thorn

3.

Nutrients are replenished in soil through

a)

roots

b)

water

c)

humus

d)

all of these

4.

Canopy is formed by

a)

small trees

b)

herbs

c)

big trees

d)

shrubs

5.

Rains may also damage the

a)

roots

b)

soil

c)

humus

d)

none of these

6.

Forests protect the soil from

a)

humus

b)

erosion

c)

growth

d)

conservation

7.

The plants also maintain the balance of oxygen and carbon-dioxide in the atmosphere, so the forest are called

a)

kidney

b)

heart

c)

lungs

d)

nose

8.

Cutting and destroying of forest is called

a)

afforestation

b)

degradation

c)

deforestation

d)

decomposition

9.

A forest is a purifier of

a)

water

b)

air

c)

both water and air

d)

none of these

10.

The insects like butterflies help flowering plants in

a)

deforestation

b)

pollination

c)

giving fragrance

d)

growth

11.

Micro-organisms act on dead plants to obtained

a)

fungus

b)

mushroom

c)

humus

d)

fertilizer

12.

The rainfall will be less in the absence of

a)

cities

b)

forest

c)

villages

d)

animals

13.

Which one of the following is odd one out?

a)

teak

b)

sal

c)

porcupine

d)

kachnar

14.

Which of the following is not prepared from the wood obtained from forest?

a)

plywood

b)

paper

c)

thermocol

d)

matchsticks

15.

Which of the following has the strongest stem?

a)

tree

b)

herb

c)

shrub

d)

climber

16.

Which among the following is the smallest forest animal?

a)

bison

b)

fox

c)

boar

d)

porcupine

17.

Ryan visited a forest with his class mates and teacher. His teacher told the students not to make noise as it will disturb

a)

birds

b)

plants

c)

animals

d)

animals and birds

18.

which of the following serve as green lungs?

a)

green pigment of plants

b)

forests

c)

kitchen garden

d)

green house gases

19.

Which one of the following is a role of forests?

a)

Prevent soil erosion

b)

Provide food, shelter, water and medicines

c)

Prevent flood

d)

All of the above

20.

Which one of the following is an animal product?

a)

Gum

b)

Honey

c)

Catechu

d)

Rubber