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nutrition in plants

Total questions: 20

Worksheet time: 43mins

Name
Class
Date
1.

The autotrophic mode of nutrition requires

a)

Carbon dioxide and water

b)

Chlorophyll

c)

Sunlight

d)

All of the above

2.

Which of the following is an example of saprotroph?

a)

Grass

b)

Mushroom

c)

Amoeba

d)

Paramecium

3.

The chlorophyll in photosynthesis is used for

a)

Absorbing light

b)

Breaking down water molecule

c)

No function

d)

Reduction of CO2

4.

Carbohydrates in the plants are stored in the form of

a)

Glycogen

b)

Starch

c)

Glucose

d)

Maltose

5.

Main site of photosynthesis

a)

Leaf

b)

Stem

c)

Chloroplast

d)

Guard cells

6.

Opening and closing of pores is a function performed by

a)

Stomata

b)

Chlorophyll

c)

Chloroplast

d)

Guard cells

7.

Photosynthesis is a

a)

Catabolic process

b)

Parabolic process

c)

Amphibolic process

d)

Photochemical process

8.

Photosynthesis is:

a)

Trapping energy of sunlight to form glucose.

b)

Synthesis of photosensitive compounds.

c)

Oxidation of glucose

d)

Oxidation of carbon dioxide

9.

Oxygen liberated during photosynthesis come from

a)

Water

b)

Carbon dioxide

c)

Glucose

d)

ChlorophyII

10.

which element is necessary for the synthesis of proteins in plants

a)

carbon

b)

magnesium

c)

iron

d)

nitrogen

11.

list three raw materials essential for photosynthesis and how they are obtained by plant?

4 lines
12.

write three steps involved in photosynthesis.

4 lines
13.

write balanced chemical equation of photosynthesis.

4 lines
14.

what is stomata?

4 lines
15.

write two functions of stomata?

4 lines
16.

Explain opening and closing of stomatal pores?

4 lines
17.

saprophytic nutrition means organism take food in solid form.

a)

True

b)

False

18.

The rate of photosynthesis increases by increase in temperaure upto 40 degree celsius.

a)

True

b)

False

19.

chlorophylls absorb mostly the__________and_______region of the spectrum.

a)

blue and green

b)

red and orange

c)

blue and red

d)

red and green

20.

high concentration of carbon dioxide become toxic for plants.

a)

True

b)

False