Question

The variously coloured plastids are called
A. Chloroplasts
B. Chromoplasts
C. Leucoplasts
D. Both (A) and (B)

Answer 1

Hint: Plastid is the organelle that is found only in plant cells. The three types of plastids are green plastid, non green chromoplast, and leucoplasts.

Complete step by step answer:
Let's discuss the option and find the correct answer.
A. Chloroplasts: It is in green color. It contains chlorophyll pigments. It is found in higher plants and green algae. Chloroplast varies in shape. In higher plants they are spheroid or ovoid or discoid. They are cup-shaped in chlamydomonas . They spirally coiled in spirogyra. Hence option A is incorrect .
B. Chromoplasts: The chromoplasts are the colored plastids. Chloroplasts are responsible for the characteristic color of flower and fruit. They contain yellow, orange and or red pigments. They are involved in attracting insects, various vectors for pollination and as also for fruit dispersal. Hence option B is correct.
C. Leucoplasts : Leucoplasts are colourless plastids. Leucoplasts mainly help in storage of food compounds like starch, proteins or fats. In underground roots, stemsSuch colourless plastids are present. They are variously shaped. Hence option C is incorrect.
D. Both (A) and (B): Only option B is correct.
Hence option B: Chromoplasts is the correct answer.

Note: From the Greek word ‘plastikos’ plastids was derived. It means formed or moulded. Plastids are large cytoplasmic organelles found in the cells of plants and algae. It is the site of manufacture and storage of important chemical compounds. It is used by the cell. Plastids often contain pigments used in photosynthesis. By the present of types of pigments it can change or determine the cell's colour.