Answer question number (a) - (d) on the basis of understanding of the following paragraph and the related studied concepts:
The green dots are called cholroplasts which contain chlorophyll A. What is the role of these dots that contain chlorophyll? B. What is the main difference between upper nd lower epidermis? C. What is the role of air spaces? D. Name the layer of cells that contain chloroplasts
Dear student,
Please find below the answer:
A. Chloroplasts are the organelles that give colour to the plant and helps the leaves to capture the sunlight to perform the process of photosynthesis. If chloroplast is not there, a plant will not be able to do photosynthesis and as a result, the plant will die.
B. Upper and lower epidermis are observed in leaves. The upper epidermis is present on the upper side of the leaf. Its surface is covered by a waxy, waterproof layer called a cuticle that prevents loss of water. The lower epidermis is present on the lower side of leaf. In the case of leaf tissue, the stomata are abundant in the lower epidermis as compared to the upper epidermis.
C. Air-space of the leaf remains filled and saturated with water vapour whereas the atmosphere surrounding the leaf often bears low water content. These differences in water vapour pressure lead to the process of transpiration where water vapour from the air space of leaf gets released into the atmosphere.
The air spaces between spongy and palisade mesophyll cells are interconnected with each other to facilitate the diffusion of gases freely between the mesophylls cells of the leaves. These air spaces also allow the diffusion of carbon dioxide from stomata to the mesophyll cells of leaves.
D. The mesophyll cells of leaves contain chloroplasts. To be more precise, it is the palisade layer of mesophyll that has chloroplasts in abundance.
Hope this clears your doubt.
Regards.
Please find below the answer:
A. Chloroplasts are the organelles that give colour to the plant and helps the leaves to capture the sunlight to perform the process of photosynthesis. If chloroplast is not there, a plant will not be able to do photosynthesis and as a result, the plant will die.
B. Upper and lower epidermis are observed in leaves. The upper epidermis is present on the upper side of the leaf. Its surface is covered by a waxy, waterproof layer called a cuticle that prevents loss of water. The lower epidermis is present on the lower side of leaf. In the case of leaf tissue, the stomata are abundant in the lower epidermis as compared to the upper epidermis.
C. Air-space of the leaf remains filled and saturated with water vapour whereas the atmosphere surrounding the leaf often bears low water content. These differences in water vapour pressure lead to the process of transpiration where water vapour from the air space of leaf gets released into the atmosphere.
The air spaces between spongy and palisade mesophyll cells are interconnected with each other to facilitate the diffusion of gases freely between the mesophylls cells of the leaves. These air spaces also allow the diffusion of carbon dioxide from stomata to the mesophyll cells of leaves.
D. The mesophyll cells of leaves contain chloroplasts. To be more precise, it is the palisade layer of mesophyll that has chloroplasts in abundance.
Hope this clears your doubt.
Regards.