Download 7. Plants making food I. Fill in the blanks 1.Does photosynthesis take

7. Plants making food
I. Fill in the blanks
1.Does photosynthesis take place 24 hours of the day? Why?
2.What food does the plant prepare?
3.The flat broad surface of the leaf is called the __________
4.The main vein of the leaf are called the ____________
5.The minute pores on the leaf are called the __________________
6.The ____________ is like the kitchen of the plant.
7.The __________ in leaves uses sunlight for energy.
8.The food prepared by the leaf in the form of ______________
9.The ______________ traps maximum sunlight.
10.Air enters the leaves and the leaf through the__________________
11.Plants produce _____________ during photosynthesis.
12.In cactus, photosynthesis takes place in the ___________
12.The green substance in the leaf______________.
13.The process through which leaf prepares food ______________
14.The plant in which the food is prepared by the stem ____________
II. Choose the correct option.
15.For preparing food along with sunlight and chlorophyll, plants need
a. oxygen and water ( )
b. Oxygen and carbon dioxide ( )
c. Carbon dioxide and
water ( )
16.This gas present in the air is used by plants during photosynthesis.
a. oxygen ( ) b. carbon dioxide ( )
c. water vapour ( )
17.This living thing prepares its own food
a. tree ( ) b. tiger ( )
c. butterfly ( )
18.Leaves do not prepare food at night because
a. they need rest ( )
b. there is no CO2 ( )
c. there is no sunlight (
19.The flat broad surface of the leaf is called the
a. midrib ( )
b. leaf blade ( )
c. petiole (
)
20.The main vein runs along the centre of the leaf is called the
a. midrib ( )
b. leaf blade ( )
c. petiole ( )
21.The leaf has minute pores or openings called
a. Stomata ( ) b. leaf blade ( )
c. midrib (
)
22.The food prepared by the leaf is in the form of
a. sugar ( )
b. gas (
) c. oil ( )
23.Cactus do not have
a. leaves (
)
b. stems (
)
c. both a and b (
III. Answer the following questions.(2M)
1.What is the function of the veins in a leaf?
2.Write a short note on the role of stomata in the leaf.
)
)
3.What does a plant required to make food?
IV.Matching
1.chlorophyll
2. leaf blade
3. stomata
4. photosynthesis
5. midrib
a. flat broad surface of the leaf
b. minute pores
c. green substance in the leaf
d. vein which runs along the centre of the leaf.
e. process by which the leaf prepares food
V. Activity(4M)
1.Draw and label a diagram of the parts of a leaf.(Activity)
2.With a neat labeled diagram showing how plants and animals depend on each other for gases
they need.(Activity)