Question

What is the sunken stomata? Explain with example

Answer 1

Hint: On the epidermis of leaves, stomata are small openings. Under a light microscope, stomata can be seen. Stomata can be seen on the stems and other sections of the plants in some species. Stomata are essential for gas exchange and photosynthesis. By opening and closing, they govern the rate of transpiration.

Complete answer:
Sunken refers to something that is hidden, thus sunken Stomata that are buried or not directly visible to the surface are known as stomata. Plants have them underneath the epidermis and beneath the leaves. A tiny pit contains these stomata.
Xerophytes are the only ones with sunken stomata. They are sunken within the leaf rather than being on the surface, and are frequently surrounded and partially covered by cuticles and hairs called trichomes. Because photosynthesis utilises and wastes a disproportionate amount of water in arid conditions, this variation, which has submerged rather than surface stomata, tries to stop the water flow.
The drying winds are kept at bay by the open sunken stomata. Hair, like trichomes, keeps a moist environment to keep water loss to a minimum.
Gas exchanges can be carried out with less loss of water. Because there is less water loss, the stomata can stay open longer, replenishing CO2 levels inside the leaf and completing photosynthetic processes for a longer period of time than plants that must close their stomata.

Note: Pine, Nerium, Acacia, and other plants with SUNKEN STOMATA are examples. Sunken stomata are seen in plants that thrive primarily in xerophytic environments, where they must lower transpiration rates. Pinus, yucca, opuntia, dracaena and other plants are examples.