Assertion (A) is true. Transpiration is the process by which water is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. This process does indeed carry away heat energy, as the evaporation of water from the plant surface causes a cooling effect.

Reason (R) is partially true. The loss of water from the plant does indeed cause a change in osmotic pressure within the plant cells. However, it's not accurate to say that the osmotic pressure increases. Instead, the loss of water leads to a decrease in the cell's water potential, which increases the osmotic potential (the potential for water to move into the cell). This is what drives the movement of water from the roots, through the plant, and out through the leaves.

So, while both A and R are related to the process of transpiration, R is not the correct explanation for A.

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Assertion (A) is true. Transpiration is the process by which water is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. This process does indeed carry away heat energy, as the evaporation of water from the plant surface causes a cooling effect.

Reason (R) is partially true. The loss of water from the plant does indeed cause a change in osmotic pressure within the plant cells. However, it's not accurate to say that the osmotic pressure increases. Instead, the loss of water leads to a decrease in the cell's water potential, which increases the osmotic potential (the potential for water to move into the cell). This is what drives the movement of water from the roots, through the plant, and out through the leaves.

So, while both A and R are related to the process of transpiration, R is not the correct explanation for A.

Knowee AI · Accepted Answer

Assertion (A) is true. Transpiration is the process by which water is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. This process does indeed carry away heat energy, as the evaporation of water from the plant surface causes a cooling effect.

Reason (R) is partially true. The loss of water from the plant does indeed cause a change in osmotic pressure within the plant cells. However, it's not accurate to say that the osmotic pressure increases. Instead, the loss of water leads to a decrease in the cell's water potential, which increases the osmotic potential (the potential for water to move into the cell). This is what drives the movement of water from the roots, through the plant, and out through the leaves.

So, while both A and R are related to the process of transpiration, R is not the correct explanation for A.

10 Assertion (A): During transpiration the evaporating water carries away heat energy.Reason (R): Due to water loss the osmotic pressure inside leaves increases.

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