Question

Assertion:
The chromoplasts contain fat soluble carotenoid pigments like carotene and xanthophylls etc.
Reason:
These pigments give yellow, orange or red colour to some parts of the plant.
A. Both Assertion and reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and reason are correct and Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect

Answer 1

Hint: Plastids, heterogeneous organelles required for the production and storing of pigments in specific photosynthetic eukaryotes, are chromoplasts. It is believed that they originated from symbiotic prokaryotes, like all other plastids, namely chloroplasts and leucoplasts. In the production and preservation of carotenoid pigments in flowers and fruits and some leaves and roots, chromoplasts play a role.

Complete answer:
Because of the existence of carotenoid pigments, chromoplasts are yellow or reddish. There is an absence of chlorophylls. Either leucoplasts or chloroplasts type chromoplasts. Through the ripening of tomatoes and chilies, the transition of color from green to reddish is due to the transformation of chloroplasts and chromoplasts. Chromoplasts are responsible for the orange color of the carrot stems.
Chromoplasts are colored plastids due to the pigments produced and deposited within them. Fruits, flowers, stems, and senescent leaves are found in them. Apart from chlorophyll, the color of these plant organs is correlated with the presence of pigments.
So, the correct answer is “Option B,Both Assertion and reason are correct and Reason is not the correct explanation for Assertion ”.

Note:
Apart from chlorophyll, the color of plant organs is correlated with the presence of pigments. However, such chromoplasts, such as those of tomatoes that appear both membranous and crystalline, can be more difficult to identify. Chloroplasts are often considered only to distinguish them from the colorless plastids, the leucoplasts, as a subgroup of chromoplasts. Chloroplasts, however, are produced separately from chromoplasts because they are specifically concerned with photosynthesis and not with the processing and storage of pigments.