Friday Special 14/02/2025

1. Which of the following best describes the main function of the xylem in plants?

• A) Transport of sugars and nutrients

• B) Transport of water and minerals from roots to leaves

• C) Transport of food from leaves to other plant parts

• D) Storage of food and water

2. What is the role of the cambium layer in a plant?

• A) It helps in the transport of water

• B) It is responsible for the growth of leaves

• C) It contributes to the lateral growth of stems and roots

• D) It forms the outer protective layer of the plant

3. In which part of the plant does secondary growth primarily occur?

• A) Roots

• B) Leaves

• C) Stems

• D) Flowers

4. Which of the following is true about phloem?

• A) Phloem transports water and minerals

• B) Phloem is made up of dead cells

• C) Phloem transports sugars and other organic nutrients

• D) Phloem contains vessels with thick walls

5. The movement of water in the xylem is primarily driven by which process?

• A) Active transport

• B) Transpiration pull

• C) Osmosis in the roots

• D) Root pressure

6. What is the main difference between primary and secondary growth in plants?

• A) Primary growth leads to an increase in the girth of the plant, while secondary growth increases height.

• B) Primary growth involves elongation of roots and shoots, while secondary growth involves thickening of stems and roots.

• C) Primary growth occurs only in the roots, while secondary growth occurs only in the stems.

• D) Primary growth is limited to vascular tissue, while secondary growth only affects ground tissue.

7. Which of the following describes the function of the secondary xylem?

• A) It stores sugars for long-term use in the plant.

• B) It forms the bark of the tree.

• C) It conducts water and minerals through the plant after secondary growth.

• D) It transports organic nutrients from the leaves to the roots.