Plant Water Transport and Transpiration

The video tutorial explores the processes of osmosis and transpiration in plants, explaining how water moves through plant structures to support functions like photosynthesis and maintaining rigidity. It discusses the differences between plant and animal cells in terms of water balance, the role of stomata and guard cells, and the factors affecting transpiration rates. The tutorial also covers the structure and function of xylem and phloem in water and nutrient transport, and demonstrates an experiment using a potometer to measure transpiration.

What is the primary function of osmosis in plants?

• To move water from roots to leaves

• To transport glucose

• To absorb sunlight

• To produce oxygen

How do guard cells regulate water loss in plants?

• By opening and closing stomata

• By absorbing water from the soil

• By reflecting sunlight

• By producing glucose

What happens to plant cells when they become turgid?

• They shrink

• They lose chlorophyll

• They burst

• They become firm and rigid

Which structure in plants is responsible for transporting water?

• Chloroplast

• Stomata

• Xylem

• Phloem

What is the role of phloem in plants?

• Producing oxygen

• Absorbing minerals

• Transporting food substances

• Transporting water

What is the main difference between xylem and phloem?

• Xylem transports food, phloem transports water

• Xylem is made of living cells, phloem is made of dead cells

• Xylem transports water, phloem transports food

• Xylem is found in leaves, phloem is found in roots

Which factor does NOT increase the rate of transpiration?

• High humidity

• Strong wind

• High temperature

• Increased light

What is the purpose of a potometer in plant studies?

• To measure transpiration rate

• To measure photosynthesis rate

• To measure root growth

• To measure leaf size

How does increased air movement affect transpiration?

• Stops transpiration

• Has no effect

• Increases transpiration

• Decreases transpiration

What effect does high humidity have on transpiration?

• Stops transpiration

• Has no effect

• Decreases transpiration

• Increases transpiration