Stomata (singular, “stoma”) are tiny pores through which plants breathe. Stomata are found on the upper and lower sides of leaves, on flower petals, on stems, and on roots.
Why is stomata on the underside of the leaf?
If the stomata are present on the plant’s lower surface, they will be less exposed to the sun and more protected from the breeze. Transpiration is the loss of water through stomata, hence the lower surface has more stomata to prevent excessive water loss.
Why are there more stomata on underside of leaf?
The stomata must be open during the daylight hours to let oxygen and carbon dioxide pass through. While they are open, water vapor escapes into the atmosphere (transpiration). … Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.
Are stomata only present in leaves?
The stomata are most common on green aerial parts of plants, particularly the leaves. They can also occur on stems, but less commonly than on leaves. The aerial parts of some chlorophyll-free land plants (Monotropa, Neottia) and roots have no stomata as a rule, but rhizomes have such structures (Esau, 1965, p. 158).
Where are sunken stomata present?
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.
Which side of leaf has more stomata dorsal or ventral?
Ventral side of leaf has more Stomata because less evaporation takes in cooler places,underside of leaf.
On which surface of the Monocot leaf are more stomata present?
Lastly, monocot leaves have stomata on both their upper and lower surfaces. Leaves like this are referred to as amphistomatous.
When stomata are present on dorsal and ventral surface of leaves the leaf is?
So, the correct answer is, ‘Reduction in transpiration. ‘ Note: -Stomata are small pores present in the leaf. They are surrounded by guard cells which help in closing and opening of stomata.
On which surface of a dicot leaf are more stomata present on upper surface on lower surface on lateral edges of the leaf on both surfaces of the leaf?
The lower surface of a dicot leaf has a greater number of stomata than the upper surface. The upper surface of a dicot leaf has a greater number of stomata than the lower surface.
In which plant sunken stomata is found?
This sunken stomata condition found in leaves of succulent xerophytes (hot desert plants) facing high temperature condition and gymnosperms. Some plants with SUNKEN STOMATA are Nerium, Pine, Acacia, etc. Plants growing mostly in xerophytic conditions have sunken stomata where they need to reduce transpiration rate.
Which of the following is found in the stomata?
Air, containing oxygen, which is used in respiration and carbon dioxide, which is used in photosynthesis passes through stomata by gaseous diffusion.
Which of the following plant sunken stomata are found?
Hint: The presence of sunken stomata is a characteristic feature of xerophytic plants to prevent water loss through respiration. Mango and Guava are mesophytic plants, whereas the hydrilla is a hydrophytic plant. Correct step by step answer: Sunken stomata are found in Nerium to control the rate of transpiration.
How many stomata are there in a leaf?
The average number of stomata is about 300 per square mm of leaf surface.
Where are stomata present in monocot and dicot leaves?
Monocots contain stomata in both upper and the lower epidermis of leaves. But, most dicot stomata of dicots occur in the lower epidermis. The main difference between stomata of monocots and dicots is the anatomy of the guard cells and distribution in the epidermis of the leaves.
Which plants have stomata on the upper surface of leaves?
Some aquatic plants such as lotus, water lily float on the surface of the water and have stomata on their upper surface of the leaves. Stomata on the upper surface helps in exchange of gases between them and the atmosphere.
Which of the following plants does not have stomata?
Submerged plants(e.g., Hydrilla , Vallisneria, Potamogeton) do not have stomata.
In which plant the leaves are narrow and have sunken stomata?
Option A: Nerium is a xerophyte it has sunken stomata to curtail the water loss by transpiration. To reduce water loss through transpiration Xerophytic plants such as Nerium have sunken stomata. Therefore, this is the correct option.
Why the stomata are sunken in desert plants?
Reason: Desert plants need to reduce transpiration as much as possible so as to survive in the hot and dry environment. Hence some of them have sunken stomata as an adaptation to curtail transpiration.
Why sunken stomata are found in Xerophytic plants?
Answer: sunken stomata are present in xerophytic so as to reduce the water loss from the plants because xerophytic plants are dessert plants and they already have less amount of water in them . That’s why they have to store the water and for this the stomata s are sunken in them…..
On which surface of leaves are stomata present?
stomate, also called stoma, plural stomata or stomas, any of the microscopic openings or pores in the epidermis of leaves and young stems. Stomata are generally more numerous on the underside of leaves.
In which of the following leaf has equal number of stomata in both epidermis?
The isobilateral leaf has equal number of stomata on both surfaces.
Which is the dorsal and ventral side of the leaf?
Dorsal is the backside and ventral is front side of the leaf. Side of the leaf facing towards the sunlight, have more chlorophyll content and hence more green in color, is the ventral side of leaf while side which is facing toward the soil is dorsal side of the leaf…..
When the stomata occur mostly on the lower surface in Dorsiventral leaves the condition is called as?
This condition is known as Hypostomatic i.e. leaf having stomata only on the lower-side. If the number of stomata is present on the upper surface of the leaf it will lead to loss of more water during day-time and in high-temperature. Hence, the correct answer is option (b).