Transport in Plants

The main function of the xylem in plants is (a)  

• Transport of water and minerals
• Transport of food
• Storage of water
• Photosynthesis

Which of the following structures is responsible for transporting sugars in plants?

• Xylem

• Phloem

• Stomata

• Root hairs

Which of the following factors affect the rate of transpiration in plants?

• Temperature

• Humidity

• Light intensity

• All of the above

What is the process by which water is lost through the stomata of a plant?

• Translocation

• Respiration

• Transpiration

• Evaporation

(a)   is primarily transported through the xylem.

• Sugars
• Oxygen
• Water
• Amino acids

What is the role of the phloem in plants?

• Transport of water

• Transport of sugars and other organic substances

• Transport of minerals

• Photosynthesis

How does the structure of xylem cells aid in their function?

• They have thick, lignified walls to withstand pressure

• They have large pores to allow easy water movement

• They have chloroplasts for photosynthesis

• They store water for later use

Where does the transpiration pull begin in a plant?

• In the roots

• In the stem

• In the leaves

• In the flowers

Which part of the plant is primarily responsible for the uptake of water and minerals from the soil?

• Leaves

• Roots

• Stem

How is water moved from the roots to the leaves in plants?

• By active transport

• By diffusion

• By transpiration pull and cohesion

• By osmosis