Which of the following statements best describes the role of transpiration in water transport in plants?

A. Transpiration only occurs in the roots to absorb water from the soil.

B. Transpiration is the process by which water is transported from the leaves to the roots.

C. Transpiration involves the evaporation of water from plant leaves, creating a pull that aids in water transport.

D. Transpiration prevents the uptake of mineral ions at the root hair cells.

How does the cohesion-tension theory explain water transport against gravity in plants?

A. Water molecules sticking together create tension, which pushes water upwards.

B. Cohesion between water molecules and tension created by transpiration enable water transport.

C. Cohesion causes water molecules to separate, reducing tension and allowing water transport.

D. Tension between water molecules breaks their cohesion, facilitating water movement.

What is the primary role of xylem vessels in the transport of water in plants?

A. Absorbing water from the soil.

B. Facilitating gas exchange for photosynthesis.

C. Conducting water and minerals from roots to leaves.

D. Storing water for later use.

Which of the following factors primarily contributes to the movement of water into the roots of plants?

A. Transpiration pull from the leaves.

B. Active uptake of mineral ions at the root hair cells.

C. Evaporation of water from the soil.

D. Adhesion of water molecules to xylem vessels.

How does the adhesive property of water contribute to its transport in plants?

A. It causes water molecules to stick to each other, creating a continuous water column.

B. It allows water molecules to stick to the walls of the xylem vessels, aiding in upward movement.

C. It prevents water molecules from sticking to the walls of the xylem vessels.

D. It reduces the tension forces generated by evaporation in leaf cells.

a) Explain the process of transpiration and how it contributes to water transport in plants. [4]

b) Discuss how the transpiration pull facilitates the movement of water from the roots to the leaves in plants. [3]

a) Elaborate on the cohesion-tension theory and how it enables water transport against gravity in plants. [4]

b) How does the adhesive property of water contribute to the tension forces that aid in water transport? [3]

a) Discuss how the active uptake of mineral ions at the root hair cells influences water transport in plants. [3]

b) Explain how the increased solute concentration in root cells leads to water entering the roots by osmosis. [4]

a) Define transpiration and explain its role in gas exchange necessary for photosynthesis. [3]

b) How does the cohesion of water molecules contribute to the transpiration pull? [3]

c) Discuss the impact of environmental factors on the rate of transpiration in plants. [4]

a) Outline the pathway of water transport from roots to leaves in plants. [4]

b) Explain the role of xylem vessels in water transport. [3]

c) How does the process of evaporation in leaf cells generate tension forces aiding in water transport? [3]

What would likely happen if the transpiration rate in a plant were to significantly increase?

A. The uptake of mineral ions at the root hair cells would decrease.

B. The tension forces in the xylem vessels would decrease.

C. The water transport from roots to leaves would slow down.

D. The uptake of water at the roots would increase.

Which of the following statements about the cohesion-tension theory is not true?

A. It explains how water can move upwards against gravity in plants.

B. It relies on the cohesive and adhesive properties of water.

C. It suggests that transpiration push is the main driver of water transport.

D. It involves the evaporation of water from the leaves, creating tension.

How does the process of osmosis contribute to water transport in plants?

A. It facilitates the active transport of water into the root cells.

B. It causes water to move from an area of lower solute concentration in the soil to an area of higher solute concentration in the root cells.

C. It prevents the adhesion of water molecules to the xylem vessels.

D. It reduces the cohesive property of water molecules.

What is the main driving force for the movement of water from the roots to the leaves in plants?

A. Gravitational pull towards the Earth.

B. Active transport of water molecules through the xylem vessels.

C. Transpiration pull resulting from the evaporation of water from the leaves.

D. Compression of water molecules at the base of the plant.

Which of the following is a consequence of the active uptake of mineral ions at the root hair cells in plants?

A. Decreased solute concentration in root cells.

B. Inhibition of osmosis into the root cells.

C. Increased water potential in the root cells.

D. Increased water uptake into the roots by osmosis.

a) Discuss the cohesion-tension theory and its significance in water transport in plants. [4]

b) How does the adhesive property of water molecules contribute to water transport? [2]

c) Explain the role of active uptake of mineral ions in root hair cells in maintaining water flow in the plant. [4]

a) Explain how the transpiration pull is generated and its role in water transport in plants. [4]

b) Discuss the role of xylem vessels in facilitating the movement of water from roots to leaves. [3]

c) How do environmental factors influence the rate of transpiration and, subsequently, water transport in plants? [3]

a) Define transpiration and explain how it is integral to the process of photosynthesis in plants. [3]

b) Describe the cohesion-tension theory and how it enables water transport against gravity in plants. [4]

c) How does the adhesive property of water molecules aid in maintaining the continuous flow of water in the xylem vessels? [3]

d) Discuss the impact of varying environmental conditions on the rate of transpiration in plants. Provide examples. [5]

a) Outline the pathway of water transport from the roots to the leaves in a plant. [4]

b) Explain the role of active uptake of mineral ions at the root hair cells in osmosis and water transport. [4]

c) How does the process of evaporation in leaf cells contribute to the generation of tension forces in the xylem? [3]

d) Discuss the adaptations in plants that help in reducing water loss through transpiration. [4]

a) Discuss the significance of the transpiration pull in the upward movement of water in plants. [4]

b) How does the cohesion of water molecules contribute to maintaining a continuous water column in the xylem? [3]

c) Explain the role of xylem vessels in the transport of water and minerals in plants. [3]

d) How do environmental factors and plant adaptations work together to regulate transpiration and ensure water conservation? [5]