Question

Epidermal cells containing chloroplast are.
A. Hydathodes
B. Accessory cells
C. Stomata
D. Guard cells

Answer 1

Hint: Chloroplast is the double membrane bounded green colour subcellular plant organelle which is a type of plastid, it performs photosynthesis due to presence of a green colour pigment called chlorophyll that captures the radiant energy which comes from the sun.

Complete answer:
The epidermis is the upper layer of the cell that covers the flower, roots, leaf, and stem of the plant, it acts as a barrier against harsh environment, and protects against water loss, regulates gas exchange, and secretes metabolic compounds. Hydathodes are the type of pores that are commonly found in angiosperm and secrete water through it in the epidermis or the margin of the leaf. These are present in leaves of submerged aquatic plants and herbaceous plants of drier habitat. Hydathodes are of two types such as passive hydathode and active hydathodes.
Accessory cells:- It is also known as a subsidiary cell, which is a plant epidermal cell associated with guards but morphologically different from other epidermal cells.
Stomata:- It is a minute opening that is present mostly on the leaves, which is the site transpiration and gaseous exchange. They are present on the leaf base but scattered all over the body.
Guard cell:- guard cell is the structure that covers the stomatal opening and maintains the opening and closing of the stomatal pore via turgidity. Guard cells contain chloroplast, which is the site of photosynthesis. It is necessary to provide energy for the closing and opening of the guard cell.
Hence, the correct option is D.

Note: Chloroplast that presents in the guard cells of stomata perform photosynthesis and form glucose, that glucose is utilized to maintain osmotic potential in the guard cell for turgidity, which is necessary for the transpiration process.