Question

What are plastids? Explain in the type of plastids?

Answer 1

☆ $\underline\bold{Plastids:-}$

• Plastids occurs in most of the plant cells and are absent in animal cells.

• They are self-replicating cell organelles i.e they have the power to divide.

●Plastids are of $\bold{three}$ types:-

1.) $\bold{Chromoplasts:-}$

-> They are coloured plastids

(expect green colour).

2.) $\bold{Chloroplast:-}$

-> They are green coloured plastids.

-> Chloroplasts are present in green algae and higher plants. They have a green pigment called $\bold{chlorophyll}$ which is involved in the process of photosynthesis.

3.) $\bold{Leucoplasts:-}$

-> They are colourless plastids.

☆ $\bold{Functions\:of\:all:'}$

● Chloroplasts trap solar energy and utilises it to manufacture food for the plant.

●Chromoplasts imparts various colour to the flower to attract insects for pollination.

● Leucoplasts store food in the form of carbohydrate (starch), fats and proteins.

Answer 2

●Plastids are double membraned organelles which are found in plant cells only.

■They are usually spherical.

■Which are primarily responsible for activities related to making and storing food.

■[Plastids are of three types]■

● Leucoplasts are colorless plastids.

>They store the food of the plant body in the form of starch, protein and lipids.

●Chloroplasts are green plastids because of the presence of chlorophyll.

>Chloroplasts occurs in green leaves

●Chromoplasts are variously colored plastids.

>They are mostly present in flowers and fruits.

Hope it helps