Question

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What are plastids
Explain briefly

Class 9th
Biology
Chapter : The fundamental unit of life : Cell

No spams ​

Answer 1

The plastid is a membrane-bound organelle found in the cells of plants, algae, and some other eukaryotic organisms. They are considered to be intracelluar endosymbiotic Cyanobacteria. Examples include chloroplasts, chromoplasts, and leucoplasts.

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Answer 2

Given Question:

What are plastids? Explain Briefly.

Required Answer:

- They are present in plant cells only.

- There are three categories of plastids:

1. Chromoplast
2. Chloroplast
3. Leucoplast

1. Chromoplast:

• These are coloured plastids except green.
• They have irregular shape.
• They provide different colours for attraction of pollinators.

2. Chloroplast:

• These are green coloured plastids.
• They are present in higher plants and green algae.
• It is responsible for green colour.
• It contains pigment chlorophyll which is responsible for trapping sunlight.

3. Leucoplast:

• These are colourless plastids.
• They are present in unexposed cells.
• They are responsible for storage of food.

- Functions of Plastids:

1. It helps in trapping of light.

2. They gives colours to plants.

3. They help in storage of food.

-View attachment for diagram.

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