Question

The formation of red chili is due to the conversion of
(a) Chromoplast to chloroplast
(b) Chloroplast to chromoplast
(c) Etioplast to chromoplast
(d) Chloroplast to etioplast

Answer 1

Hint: green color of a plant is due to the presence of chlorophyll present in the chloroplast whereas yellow, red, orange color is due to the presence of pigments of chromoplasts.

Complete answer:
All plants and euglenoids contain a plant cell organelle called plastid. These plastids are divided into three types namely chloroplast, chromoplast, and leucoplast. The green color pigment in plants i.e, chlorophyll is present in chloroplasts along with carotenoid pigments. This pigment induces green color to the plant. Chromoplasts contain fat-soluble pigments called carotenoids such as carotene, xanthophylls, and others that induce yellow, red, orange color. Red chilies are formed when green color pigments containing chloroplast are converted to chromoplast which induces red color.

Additional Information:
  - plastids are the membrane-bound organelles present in all plants and euglenoids which can be easily visible under the microscope as they are very large.
- plastids impart color to different parts of the plant due to the presence of various kinds of pigments.
- chloroplast, chromoplast, and leucoplast are the three types of plastids.
- green color of plants and euglenoids is due to the presence of a green color pigment called chlorophyll which is present inside the chloroplast. Along with chlorophyll chloroplast also contain other carotenoid pigments. Apart from inducing green color to the plant, chlorophyll plays an important role in the photosynthesis process. There is no photosynthesis without the presence of chlorophyll.
- some plants or plant parts appear to be green, red, or orange in color because of pigments like carotene and xanthophylls present inside the chromoplast.
- colorless plastids that store nutrients are called leucoplasts.
So, the correct answer is ‘chloroplast to chromoplast’.

Note: -Carbohydrates are stored in amyloplasts, proteins are stored in leucoplasts, and oils and fats are stored in elaioplasts. These are the types of leucoplasts.
-All the plants and plant parts that appear in different colors other than green is due to pigments of chromoplasts.