Question

Explain the types of plastids ? For class 9

Answer 1

Answer:

1) Grana : It is a stack of membrane bounded,flattened discoid sac containing the molecules of chlorophyll in it.

2) Stroma :Homogeneous matrix in which grana are embedded. They contain photosynthetic enzymes,DNA, ribosomes in them..

Explanation:

grana is the site of light reaction and stroma is the site of dark reaction...

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Answer 2

Answer:

There are 3 types of plastids:

1)Chromoplast:

It gives color to the fruits or vegetables like red color of tomato comes from chromoplast.

2)Leucoplast:

IT only stores the food made by the plant.

3)Chloroplast:

It gives the green color to the leaves. And also helps in capturing sunlight and also in making chlorophyll.

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