What is meant by sunken stomata?

A sunken stomata is a stomata in a small pit, i.e. stomata are embedded into the leaf layers rather than on the surface of the leaves. This helps in protecting against the escaping water vapor from air currents thereby decreasing water loss from the leaf and hence decreasing transpiration.

Where is sunken stomata found?

Halophytes. Hint: The term sunken means hidden so sunken stomata are the type of stomata that are hidden or not directly exposed to the surface. They are found below the leaves and the epidermis in the plants. These stomata are present in a small pit.

Why do some leaves contain sunken stomata?

Sunken stomata are present in plants that are usually in areas of water scarcity i.e., arid areas or deserts where to prevent water loss due to transpiration.

What covers sunken stomata?

Marram grass. Sunken stomata are found primarily in xerotypes. Rather than being on the leaf surface they are sunken into the leaf and usually are surrounded as well as partially covered by cuticle and hairs called trichomes.

Is sunken stomata found in Lotus?

Sunken stomata are usually present in plants found in dry environments to prevent water loss. Complete answer: Also, their stomata are mostly open. Examples include Lotus and White water Lily.

How does sunken stomata lower the rate of transpiration?

The sunken stomata creates a small pocket of moist air. The high humidity in the air pocket reduces the water potential gradient between the leaf air spaces and the exterior, and therefore decreases the rate of transpiration.

Is Nerium a CAM plant?

Nerium consists of sunken stomata, it is an adaptation seen to prevent water loss by transpiration. CAM plants like Nerium are mostly succulent xerophytes and here the stomata are present in small pit-like structures.

Why do cactus have sunken stomata?

Cacti typically have sunken stomata, which are an adaptation to drought conditions. An additional adaptation to a harsh environment is the fine covering of wax across the leaf or stem surface. Stomata are present in the sporophyte generation of all land plant groups except liverworts.

Do all gymnosperms have sunken stomata?

Note: In gymnosperms, the leaves are needle shaped and are covered with a covering known as the cuticle. The stomata are found on the underside of the leaves and they are found to be sunken to deep layers of the epidermis. In gymnosperm, species such as Pinus, Cycas, and Taxus show deeply sunken stomata.

How do sunken stomata reduce transpiration?

Why do plants in arid regions have sunken stomata?

“Plants” growing in “arid regions” have “deep roots and sunken stomata”. This is because in arid regions there is a severe problem of water scarcity. Sunken stomata is another such adaptation that helps the plants to minimise water loss caused by transpiration.

Does oleander have sunken stomata?

Oleander also has defenses against herbivory, making the entire plant extremely toxic, even to humans. Instead of sunken stomata, the epidermis in oleander recesses and creates a pocket that is lined with trichomes. The stomata are located at the base of these pockets, called stomatal crypts.