write type of plastid and one function
Answers
Answer:
(i) Leucoplaste (colourless plastids). These store carbohydrates, proteins and lipids in the cells. (ii) Chromoplasts (coloured plastids). Green plastids, e.g., chloroplasts synthesize food in the presence of sunlight by the process called photosynthesis.
Answer:
Solution:
(i) Leucoplaste (colourless plastids). These store carbohydrates, proteins and lipids in the cells.
(ii) Chromoplasts (coloured plastids). Green plastids, e.g., chloroplasts synthesize food in the presence of sunlight by the process called photosynthesis.
Explanation:
Plastid is a membrane-bound organelle found in the cell of plants, algae and few eukaryotic cells.
It the site of production and storage of important chemical compounds which are used by the cells of autotrophic organisms.
They contain pigments which are used in photosynthesis and the types of pigments determine the cell's colour.
The types of plastids are-
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.
They are of three types:-
a) Amyloplasts- stores starch.
b) Proteinoplasts- stores proteins.
c) Elaioplasts- stores fats and oils.
More Explanation:
All of the above.
Plastids are the cytoplasmic organelles found only in plant cells. On the basis of pigments present, plastids are of three types:
(i) Leucoplasts (colourless plastids)
(ii) Chloroplasts (green coloured plastids)
(iii) Chromoplasts (coloured plastids other than green).
Leucoplasts are for storage of starch grain and oil drops. Such colourless plastids are present in underground roots, stems.
Chloroplasts are mainly for photosynthesis. They are present in leaves.
Chromoplasts are responsible for the characteristic colour of flower and fruit. They are involved in attracting insects, various vectors for pollination and for fruit dispersal.