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Are their stomata on the upper leaf epidemis of rhoeo spathacea?
Yes, there are stoma present. Rhoeo leaves have dorsiventral symetry. The dorsal side being pink in color have more stomata and ventral side facing sun is green with less stomata per unit area.
What are the pores on leaves called?
The pores on leaves are called stomata. Stomata are small openings that allow for gas exchange, such as the intake of carbon dioxide and the release of oxygen and water vapor. They play a crucial role in photosynthesis and transpiration in plants.
Why does duckweed have stomata on the top surface of the leaf?
Duckweed has stomata on the top surface of the leaf to minimize water loss and prevent desiccation. By having stomata on the upper surface, duckweed can control gas exchange while reducing exposure to dry and windy conditions.
What guard cells guard?
They are the pair of cells that surround the stomata (pores on the underside of leaves) They can change shape to open or close the stomata. Most plants open their stomata during the day (to allow co2 to enter for photosysthis) and close them at night. However cacti open their stomata during the night to reduce water loss, and have to use stored co2 for photosysthesis.
Where does most transpiration occur in a leaf?
On the bottom of the leaves. This is because Stomata, the place in the leaf were gaseous exchanges of water and carbon dioxide occur, are more common in this part of the leaf compared to the top of the leaf. This is an adaption, because if plants had all of their stomata on the top of their leaves, excessive loss of water will be lost to the environment and cause dehydration of the plant and even potential death.
Why Carbon-dioxide is absorbed more by lower leaf surface?
The underside of leaves is where the 'stomata' are to be found in most (not all) plants and it is through these stomata that the gas exchange occurs. The upper surfaces of leaves are usually tough and shiny to protect the leaf and shed water. If the stomata were on the upper surface and the leaf was wet, the water would block them and impede gas exchange.
Where are stomata generally most abundant in the majority of leaves?
On a dorsi-ventral leaf most of the stomata are found on the lower side of the leaf, that remains away from sunlight. On an iso-bilateral leaf stomata are present on both the sides, upper as well as lower.
Are stomata under surface or upper surface of the leaf?
In most cases it is at the underside of the leaf, as it does not want sunlight to dry it up.
Most leaves have the upper surface more green and shiny than the lower one - Why?
The glossy and green upper surface of leaves helps to reflect excess sunlight and prevent dehydration by reducing water loss through evaporation. The lower surface may be duller to maximize light absorption for photosynthesis and has pores called stomata that allow for gas exchange and water vapor release.
How do gases enter and leave plants?
In terrestrial plants, gas enters and leaves (termed "gas exchange") through cell-lined pores called "stomata." Stomata open and close in response to light and humidity, permitting oxygen, carbon dioxide and water vapor to enter and leave the plant. In most terrestrial plants, the stomata are located on the surface of the leaves, or in cacti, on the surface of the stems. In aquatic plants, gas exchange directly though the tissue surface.
Are their stomata on the upper leaf epidemis of rhoeo spathacea?
Yes, there are stoma present. Rhoeo leaves have dorsiventral symetry. The dorsal side being pink in color have more stomata and ventral side facing sun is green with less stomata per unit area.
What side of the leaves are numerous stomata?
most stomatas shown on around the leaves
In which part of the plant does transpiration occur the most?
Transpiration primarily occurs in the leaves of a plant, specifically through small openings called stomata. These stomata allow water vapor to escape from the leaf surface into the atmosphere. While transpiration can also occur in stems and other parts, the majority of water loss takes place in the leaves due to their large surface area and exposure to sunlight.
Why are stomata's in the lower epidermis but not in the upper epidermis?
The explanation lies in how the stomata works. They regulate any gases that pass through them. When the temperature is too hot, it will close to conserve water vapor but this will block CO2 coming in also. Therefore plants don't want to have their stomata closed all the time nor opened all the time. Sunlight hits the top of the leaves and therefore the temperature and light intensity is higher on the top surface of the leaves. If many stomata were to be located on the top, the plant would loose much of its water and when the stomata closes to conserve water, it won't get as much CO2. Therefore for most plants, the stomata stay on the bottom where the temperature is a bit cooler. Also it is protected from the wind since wind can cause evaporation of water.
What are the pores on leaves called?
The pores on leaves are called stomata. Stomata are small openings that allow for gas exchange, such as the intake of carbon dioxide and the release of oxygen and water vapor. They play a crucial role in photosynthesis and transpiration in plants.
Why does duckweed have stomata on the top surface of the leaf?
Duckweed has stomata on the top surface of the leaf to minimize water loss and prevent desiccation. By having stomata on the upper surface, duckweed can control gas exchange while reducing exposure to dry and windy conditions.
What guard cells guard?
They are the pair of cells that surround the stomata (pores on the underside of leaves) They can change shape to open or close the stomata. Most plants open their stomata during the day (to allow co2 to enter for photosysthis) and close them at night. However cacti open their stomata during the night to reduce water loss, and have to use stored co2 for photosysthesis.
