Write the name of different plant parts in which chromoplast, chloroplast and leucoplast are present.
A. Chromoplast- flower and fruit, chloroplast- leaves, leucoplast- root
B. Chromoplast- root, chloroplast- leaves, leucoplast- flower and fruit
C. Chromoplast- leaves, chloroplast- flower and fruit, leucoplast- root
D. Chromoplast- bark, chloroplast- root, leucoplast- fruits

Hint: Plant cells have chloroplasts, chromoplasts, leucoplasts and plastids. chromoplast are red and yellow or colour. They are found in petals of flower and fruit. Leucoplasts are colorless plastids, occur in plant cells are not exposed to light, such as root and seeds. Chloroplasts are an organelle unique to plant cells that contain chlorophyll are responsible for photosynthesis process so that plants can convert sunlight into chemical energy.

Complete Answer:
- Plastids are double suede bound organelles found inside plants and algae. Undifferentiated plastids may develop into chloroplasts, chromoplasts, leucoplasts. Generally, Chromoplasts are plastids.
- Chromoplasts are involved in different coloured pigments synthesis and their storage. It is responsible for providing different colours to the flower, fruits. The chloroplast is the one of the types of plastid, which gives green coloured pigment.
- Photosynthesis process is involved in chloroplast. Leucoplasts are another type of plastids, which are non-pigments, they are involved in storage functions. Colourless plastids are present in underground roots, stems.

Thus, the option (A) is correct.

Note: Photosynthesis is the process of converting light energies into chemical energies and storing it in bonds of sugar. This process occurs in plants and algae. Function of leucoplasts are starch grains, proteins and lipids are stored. Function of chromoplasts is that flowers attract agents of pollination, fruits attract agents of dispersal.