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Which has more stomata the upper or lower epidermis?
Typically, the lower epidermis has more stomata compared to the upper epidermis. This arrangement helps plants regulate gas exchange, such as carbon dioxide intake and oxygen release, more efficiently.
Which is more advantageous to plants-more stomata on the upper epidermis or lower epidermis?
upper epidermis for sure>>>
Why it is that the palisadi layer is located only in upper epidermis and not in lower epidermis?
Because in leaves it is mostly the upper side facing the sun and receiving light for photolysis of water by the chlorophyll present in the chloroplasts of palisade layer cells hence the palisade layer in dorsiventral leaves is present below the upper epidermis of leaves.
Where would you find melanocytes and tactile cells?
Stratum Basale or Germinativum Some 10-25% of the cells in the stratum Basale are melanocytes, and their branching processes extend among the surrounding cells, reaching well into the more superficial Stratum Spinosum layer. Occasional Merkel cells are also seen in this stratum.
Why there are more stomata in lower epidermis than in upper epidermis?
Because lower epidermis remains away from the light and in the absence of light the water loss through transpiration is minimized.
Which layer possesses more guard cells the upper or the lower epidermis Why?
The lower epidermis typically possesses more guard cells than the upper epidermis in many plant species. This is primarily because the lower surface of leaves is often more shaded and less exposed to direct sunlight, reducing water loss through transpiration. The increased number of guard cells on the lower epidermis helps regulate gas exchange while minimizing water loss, which is crucial for the plant's survival.
Which has more stomata the upper or lower epidermis?
Typically, the lower epidermis has more stomata compared to the upper epidermis. This arrangement helps plants regulate gas exchange, such as carbon dioxide intake and oxygen release, more efficiently.
Like your skin a leafs what protects its more tender inner cells?
tissues are layers of similar cells. the outside layer of a leaf is called the epidermis tissue. the epidermis is made of flat cells . this layer is like the top layer of your skin. it protects the plant.
Which is more advantageous to plants-more stomata on the upper epidermis or lower epidermis?
upper epidermis for sure>>>
How can you distinguish between the upper and the lower epidermis of most leaves?
The upper and lower epidermis of most leaves can be distinguished by their structure and function. The upper epidermis typically has a thicker cuticle to reduce water loss and is often more transparent, allowing light to penetrate for photosynthesis. In contrast, the lower epidermis usually contains more stomata, which facilitate gas exchange, and may have more trichomes or hairs for protection. Additionally, the arrangement of cells and presence of specialized structures can vary between the two layers.
What layer is more cellular than the other- Dermis or Epidermis?
The dermis is more cellular than the epidermis. The dermis contains a variety of cells, including fibroblasts, macrophages, and mast cells, which play important roles in maintaining the structure and function of the skin. In contrast, the epidermis primarily consists of keratinocytes, which are responsible for producing the protein keratin that helps to form the skin's protective barrier.
How are epidermis cells important to a leaf?
Epidermal cells are important to the leaf because depending on the climate that the plant resides within, the plant may create more than one epidermal layer. The purpose of this/these layer is to retain water, and some plants have a cuticle formed on the outside of the epidermis to prevent the loss of water too. In order to bring in CO2 from the air, leaves contain stoma which are essentially small pores in the lower epidermal layer that can open or close based on the plants needs. Guard cells on each side of stoma regulate gas exchange, as well as the loss of water.
Which structure is responsible for the opening and closing of stomata?
guard cells
Why it is that the palisadi layer is located only in upper epidermis and not in lower epidermis?
Because in leaves it is mostly the upper side facing the sun and receiving light for photolysis of water by the chlorophyll present in the chloroplasts of palisade layer cells hence the palisade layer in dorsiventral leaves is present below the upper epidermis of leaves.
How does the epidermis guard against harmful radiation?
Melanin is the dark pigmentation contained in skin. It is contained in melanocytes, which are the cells which produce melanin. The purpose of melanin is to filter out harmful radiation from the sun. Mostly it does not. The best way is to use a sunscreen with SPF of 30 or more.
Which type of dermal cell has more chloroplasts than any other dermal cells because it has greater energy needs?
Guard cells have more chloroplasts than any other dermal cells because they need energy to facilitate the opening and closing of stomata for gas exchange and water regulation in plants.
Why dicot leaf is known as dorsiventral leaf?
Dicot leaf is also called dorsiventral leaf as it has both dorsal and ventral side with identifiable features. The protective layer is named as Epidermis and there is both upper and lower epidermis. In dorsiventral leafs the lower epidermis which is also called abaxial side will have more number of stomata compared to the adaxial side or upper epidermis. The gap between the two epidermis is termed as mesophyll and in dicot leaf we can see a differentiated mesophyll region. The region is differentiated into palisade and spongy tissue. The region just below upper epidermis have elongated parenchyma cells with chlorophyll filled in and they are called Palisade tissues. This is the main reason behind dark green colour at upper side of a dicot leaf.
