Transport in Vascular Plant

What is the primary function of xylem in plant transport?

• Transport of sugars

• Transport of water and minerals

• Transport of amino acids

• Transport of hormones

Which one of the following tissues is responsible for the upward movement of water in plants?

• Phloem

• Epidermis

• Xylem

• Parenchyma

In which part of the plant does most of the photosynthesis occur?

• Leaves

• Roots

• Stems

• Flowers

What is the main component responsible for the movement of sugars in the phloem?

• Water

• Starch

• Sucrose

• Oxygen

Which of the following statements is true about transpiration?

• It is the absorption of water by roots.

• It is the release of oxygen during photosynthesis.

• It is the loss of water vapor from the leaves.

• It is the movement of sugars in the phloem.

What is the role of guard cells in plant leaves?

• Photosynthesis

• Regulation of water loss through stomata

• Transportation of minerals

• Support for the leaf structure

Which of the following is not a factor affecting the rate of transpiration?

• Humidity

• Temperature

• Light intensity

• Soil pH

What is the driving force behind the movement of water in the xylem vessels?

• Root pressure

• Transpiration pull

• Photosynthesis

• Osmotic pressure

What is the phenomenon known as when water moves from an area of higher water potential to an area of lower water potential through a selectively permeable membrane?

• Active transport

• Osmosis

• Transpiration

• Capillarity

Which of the following is NOT a factor influencing the movement of water in the xylem during transpiration?

• Cohesion between water molecules

• Adhesion between water and xylem vessel walls

• Gravity

• Root pressure