Question

The xylems in plants are responsible for

• A. Transport of water
• B. Transport of food
• C. Transport of amino acids
• D. Transport of oxygen

Answer 1

The correct option is A

Transport of water

The correct option is A.

Explanation of the correct option:

1. The complex tissue of plants that helps conduct water and minerals from roots to other parts of plants is called the Xylem.
2. It provides mechanical support to plant parts.
3. In flowering plants, the Xylem is composed of four elements: tracheids, xylem vessels, xylem fibers, and xylem parenchyma.
4. In gymnosperms, xylem vessels are not present.
5. Xylem tracheids are elongated, tube-like cells with thick lignified walls that are the main conducting tissue.
6. Xylem vessel is a long cylindrical tube-like structure with lignified walls and is the main water-conducting tissue.
7. Xylem fibers are cells with thick walls, and xylem parenchyma are living thin-walled cells that help store food in the form of starch or fat.
8. Xylem vessels and tracheids transport water to different parts of plants by diffusion.

Explanation of the incorrect options:

Option B:

1. The complex tissue of plants that helps conduct food from leaves to other parts of plants is called phloem.
2. In angiosperms, phloem comprises sieve tubes, sieve elements, phloem parenchyma, and phloem fibers.

Option C:

1. Amino acids are transported between different parts through xylem and phloem in plants.
2. Xylem and phloem are plants conducting tissues that help transport amino acids.

Option D:

In plants, oxygen is transported by means of stomata in leaves through diffusion.

Final Answer: The xylems in plants are responsible for the transport of water.