Question

what are plastide.How many types of plastides are there?
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Answer 1

Explanation:

Plastid is a membrane-bound organelle found in the cell of plants, algae and few eukaryotic cells.

Chloroplasts:- are the green plastids which contain chlorophyll pigments for photosynthesis.

Chromoplasts:- are the coloured plastids for pigment synthesis and storage.

Gerontoplasts:- are the chloroplasts that are going through the ageing process.

Leucoplasts: are the colourless plastids for monoterpene synthesis found in non- photosynthetic parts of the plants.

Answer 2

✴Answer:-

A plastid is a cytoplasmic organelle involved in the synthesis and storage of food. Its function largely depends on the presence of pigments. ... A plastid containing green pigment (chlorophyll) is called chloroplast whereas a plastid containing pigments apart from green is called a chromoplast.

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➡Types of Plastids:-

There are four main types of plastids are follow:

1. Chloroplasts:- Are the green plastids which contain chlorophyll pigments for photosynthesis.
2. Chromoplasts:- Are the coloured plastids for pigment synthesis and storage.The pigment present in them is carotene which gives a different colour to fruits and flowers.
3. Gerontoplasts:-Are the chloroplasts that are going through the ageing process.These are present in the leaves in which no more photosynthesis occurs (such as in the fall months).
4. Leucoplasts:-Are the colourless plastids for monoterpene synthesis found in non- photosynthetic parts of the plants.

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✴More To Know:-

• Plastids are double-membrane organelles which are found in the cells of plants and algae. Plastids are responsible for manufacturing and storing of food. These often contain pigments that are used in photosynthesis and different types of pigments that can change the colour of the cell.

• Plastids are responsible for photosynthesis, storage of products like starch, and for the synthesis of many classes of molecules such as fatty acids and terpenes, which are needed as cellular building blocks and/or for the function of the plant.

• Leucoplasts are colorless plastids which perform the function of storage of oil, starch, and proteins.

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