GCSE Biology - Transport in plants - Translocation (Phloem) and Transpiration (Xylem) #51

The video explains the mass transport systems in plants, focusing on translocation and transpiration. Translocation involves the movement of sugars from leaves to other parts of the plant via flow in tubes. Xylem tubes transport water and minerals from roots to leaves, driven by evaporation from leaves. Transpiration, the evaporation of water from leaves, is influenced by light, temperature, air flow, and humidity.

What is the primary function of phloem tubes in plants?

• Transporting water from roots to leaves

• Transporting sugars from leaves to other parts

• Providing structural support

• Absorbing nutrients from the soil

Which material strengthens xylem tubes, making them effective for water transport?

• Cellulose

• Lignin

• Chitin

• Keratin

What drives the movement of water through a plant in the process of transpiration?

• Growth of plant cells

• Photosynthesis

• Evaporation of water from leaves

• Absorption of nutrients

How does high light intensity affect the rate of transpiration?

• Increases the rate

• Has no effect

• Stops transpiration completely

• Decreases the rate

What effect does high humidity have on the rate of transpiration?

• Increases the rate

• Decreases the rate

• Has no effect

• Stops transpiration completely