Plant Water Transport Concepts

The video explains how water is transported in plants, focusing on osmosis, mineral transport, and the role of xylem. It covers root pressure and the cohesion tension model, emphasizing the importance of transpiration. The video concludes with a summary and revision tips.

What process allows water to enter the roots from the soil?

• Diffusion

• Evaporation

• Osmosis

• Active transport

Which mineral is essential for chlorophyll formation in plants?

• Iron

• Potassium

• Magnesium

• Calcium

What is the primary function of xylem in plants?

• Photosynthesis

• Transporting sugars

• Gas exchange

• Transporting water and minerals

What is the main limitation of root pressure in water transport?

• It only works in small plants

• It cannot overcome gravity in tall trees

• It requires energy

• It cannot transport minerals

Who proposed the cohesion-tension model?

• Albert Einstein

• Henry Dixon and John Joly

• Gregor Mendel

• Charles Darwin

What is transpiration in plants?

• The transport of nutrients

• The loss of water vapor from leaves

• The process of photosynthesis

• The absorption of water by roots

Which property of water allows it to form a continuous column in the xylem?

• Viscosity

• Adhesion

• Cohesion

• Surface tension

What effect does high temperature have on transpiration?

• Increases transpiration

• Decreases transpiration

• Stops transpiration

• No effect

Which factor does NOT speed up transpiration?

• Gentle breezes

• High humidity

• High light

• High temperature

What is the role of lignin in xylem?

• To transport water

• To reinforce and prevent collapse

• To conduct photosynthesis

• To store nutrients