Plant Water Transport and Adaptations

This video tutorial covers the process of transpiration in plants, focusing on how water is transported through the xylem. It explains the factors affecting transpiration, such as humidity, wind, CO2, sunlight, and temperature. The role of guard cells and stomata in regulating water loss is discussed, along with the mechanism of water movement through the xylem using osmosis and pressure. The video also explores how plants absorb minerals and ions through their roots and highlights the adaptations of xerophytes and halophytes to survive in arid and saline environments.

What is the primary process responsible for water transport in the xylem?

• Photosynthesis

• Fermentation

• Respiration

• Transpiration

How does high humidity affect the rate of transpiration?

• Stops transpiration completely

• Has no effect

• Increases the rate

• Decreases the rate

What role do guard cells play in plant leaves?

• They regulate the opening and closing of stomata

• They store water

• They transport nutrients

• They conduct photosynthesis

What happens to guard cells when they lose water?

• They increase photosynthesis

• They become turgid

• They close the stomata

• They open the stomata

Which force helps water move up through the xylem against gravity?

• Gravity

• Adhesion

• Photosynthesis

• Diffusion

What is the role of osmosis in water transport in plants?

• It evaporates water

• It stores water in roots

• It moves water from high to low concentration

• It moves water from low to high concentration

How do plants absorb mineral ions from the soil?

• Through passive diffusion

• Using active transport

• By photosynthesis

• Through transpiration

What is the mutualistic relationship between plants and fungi called?

• Predation

• Mutualism

• Commensalism

• Parasitism

What adaptation helps xerophytes survive in arid environments?

• Shallow roots

• High transpiration rate

• Thin leaves

• Hairy stomata

How do halophytes manage to live in high salinity environments?

• By increasing transpiration

• By having sunken stomata

• By shedding all leaves

• By storing salt in leaves