How do carbon dioxide and water enter into plants?
Dear Student
Plants normally do not absorb water through their leaves. In certain rare condition they can absorb water by the epidermis present on leaf.
Plants absorb water with the help of root hairs present on the root via osmosis, it is then transported to other parts of the plant (through the network of xylem vessels) by the action of transpiration pull and root Pressure.
The major mechanism for long-distance water transport in plants is explained by the cohesion-tension theory, where the driving force of water transport is transpiration, i.e., the evaporation of water from the leaf surfaces. Water molecules cohere (stick together), and are pulled up the plant by the tension, or pulling force, exerted by evaporation at the leaf surface. Majority of water is transported through transpiration pull.
Positive pressure created inside the xylem when water follows the ions transported along the concentration gradients into the vascular system. Root pressure can transport water and dissolved mineral nutrients from roots through the xylem to the tops of relatively short plants when transpiration is low.
Plants take in carbon dioxide from the atmosphere through the small pores on the surface of their leaves called stomata.
Plants normally doesn't take CO2 with the help of roots. There are some exceptions such as Cannabis plant. The mechanism is not yet known.
Regards.
Plants normally do not absorb water through their leaves. In certain rare condition they can absorb water by the epidermis present on leaf.
Plants absorb water with the help of root hairs present on the root via osmosis, it is then transported to other parts of the plant (through the network of xylem vessels) by the action of transpiration pull and root Pressure.
The major mechanism for long-distance water transport in plants is explained by the cohesion-tension theory, where the driving force of water transport is transpiration, i.e., the evaporation of water from the leaf surfaces. Water molecules cohere (stick together), and are pulled up the plant by the tension, or pulling force, exerted by evaporation at the leaf surface. Majority of water is transported through transpiration pull.
Positive pressure created inside the xylem when water follows the ions transported along the concentration gradients into the vascular system. Root pressure can transport water and dissolved mineral nutrients from roots through the xylem to the tops of relatively short plants when transpiration is low.
Plants take in carbon dioxide from the atmosphere through the small pores on the surface of their leaves called stomata.
Plants normally doesn't take CO2 with the help of roots. There are some exceptions such as Cannabis plant. The mechanism is not yet known.
Regards.
