Question

Diacytic stomata possess subsidiary cells ___________________.
A. Parallel to guard cells
B. In rings around guard cells
C. At right angles to guard cells
D. Unequal

Answer 1

The small openings found in the stems and leaves of the plants are known as stomata. These are the specialized cells that function perfectly and assist in the gaseous exchange of plant tissues. Specialized, bean-shaped cells surrounded by the stoma are guard cells.

Complete answer: There are different types of stomata:
-Anomocytic Stomata- They are surrounded by fixed-shape and large epidermal cells.
-Anisocytic Stomata- Each stoma is surrounded by three subsidiary cells of an unequal scale.
-Diacytic stomata-These are surrounded by a pair of subsidiary cells perpendicular to the cells that are covered.
-Paracytic Stomata: There are two subsidiary cells surrounding them.
-Gramineous Stomata: There are two guard cells in each stoma.
The pair of subsidiary cells surround diacytic stomata. At the proper angles to the guard cells, the common wall of the subsidiary cells is. Caryophyllaceae, Acanthaceae, Dianthus, for instance, etc.
Thus, Option C, i.e., At right angles to guard cells is the correct choice.

Note: There ought to be a large stomatal aperture to prevent photorespiration to enhance the amount of carbon dioxide or else more energy and carbon dioxide will be lost. Stomata opening occurs mostly in the presence of sunlight and when photosynthesis occurs. And the closure of the stomata is the opposite of the phenomenon of opening. And the termination takes place at a time of night when there is no sunshine.