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What part of the root absorbs water from the soil?

root hairs

Which part of the root hair cell controls the movement of substances into and out of the cell?

Plant cells

Nucleus Contains genetic material, including DNA, which controls the cell’s activities.
Cell membrane Its structure is permeable to some substances but not to others. It therefore controls the movement of substances in and out of the cell.

What forces the roots to absorb water?

The root cells behave as an ideal osmotic pressure system through which water moves up from the soil solution to the root xylem along an increasing gradient of D.P.D. (suction pressure, which is the real force for water absorption).

What do healthy and unhealthy root systems look like?

What do healthy roots look like? Healthy roots should be white or tan, succulent, and numerous and long enough to hold the soil in the shape of the pot. If any root tips are visible, they should be white. If the roots are brown and crumbly, that means the plant is unhealthy.

Which tissue acts as a filter on the water absorbed by root hairs?

Endodermal cells

What drives the flow of water through the xylem?

Transpiration is ultimately the main driver of water movement in xylem. The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata are open to allow gas exchange for photosynthesis.

Which organism does not cause disease in plants?

Which organism does not cause disease in plants? Bacteria.

What provides the major force for the movement of water and solutes from roots to leaves?

Transpiration, the evaporation of water from leaves, exerts a pull that bears the primary responsibility for the movement of water and solutes from roots to leaves. Hydrogen bonds among water molecules are responsible for the tendency of those molecules to stick together.

Which are the process behind the water movement in plants from root to leaf?

Transpiration is the loss of water from a plant in the form of water vapor. Water is absorbed by roots from the soil and transported as a liquid to the leaves via xylem. In the leaves, small pores allow water to escape as a vapor. Of all the water absorbed by plants, less than 5% remains in the plant for growth.

What is the primary purpose of the leaves of a plant?

The main function of a leaf is to produce food for the plant by photosynthesis. Chlorophyll, the substance that gives plants their characteristic green colour, absorbs light energy.

Which part of the leaf carries water through the leaf?


Why Most leaves are flat and broad?

Leaves are broad and flat so that they can absorb large amounts of light energy from the sun. more the surface area exposed to sun light more will be the rate of photosynthesis.

What advantage is it to a leaf to be broad and thin?

The leaves are broad to maximize surface area for light harvest and they are thin since light cannot penetrate too deeply into the leaf (the amount of light decreases exponentially with distance).

Why Many leaves are very thin?

✭ Thin leaves allow energy from sun to reach to every cell of the leaf. Sunlight is absorbed by the upper part of the leaf. As we know, sunlight cannot penetrate too deep inside the leaf because the amount of light decreases with distance. So the leaf are thin to allow the sunlight to reach the bottom part of the leaf.

Why the green leaves are thin and broad?

Due to their broad surface areas, green leaves can absorb more sunlight at a given time, and due to the thinness of the leaves, the light energy can easily penetrate the leaf surface and be trapped by the chloroplasts. This makes photosynthesis efficient. Therefore, green leaves are thin and broad.

Why is it an advantage for most leaves to be bored and thin?

Answer. Sometimes, it helps in photosynthesis because the leaves being broad and thin increases the excitement of chlorophyll molecules contained in them , further absorbing energy for more energy which is later required to break the OH- ions.