Xylem: Upward Water Movement in Plants

The video explains how water is transported in plants through xylem, which consists of tracheids and vessel elements. Water enters through root hairs and moves upward due to root pressure, adhesion, cohesion, and capillary action. Transpiration, driven by evaporation from stomata, creates a transpiration pull that is crucial for water movement, especially during sunny days.

Which type of xylem cell is primarily responsible for transporting water in plants?

• Vessel elements

• Tracheids

• Sieve tubes

• Phloem cells

What initiates the movement of water into the roots of plants?

• Transpiration

• Root pressure

• Capillary action

• Photosynthesis

What is the effect called when water molecules stick to the walls of xylem tubes?

• Cohesion

• Evaporation

• Adhesion

• Transpiration

What process is primarily responsible for pulling water up through the plant?

• Transpiration

• Photosynthesis

• Capillary action

• Root pressure

During which time of day is the upward movement of water in plants at its peak?

• Early morning

• Evening

• Night

• Midday