Question

what is the role of xylem in the roots and stem of a plant? to protect the plant from insects to help the plant absorb sunlight to transport water and nutrients from the roots to the rest of the plant to transport food from the leaves to the rest of the plant

Explanation:

• The first option is incorrect as xylem doesn't protect from insects (that's more related to structures like bark or trichomes).
• The second option is wrong because absorbing sunlight is the role of chloroplasts in leaves, not xylem.
• The third option is correct: Xylem is a vascular tissue in plants that transports water and dissolved nutrients (like minerals) from the roots, where they are absorbed, to the rest of the plant (stems, leaves, etc.).
• The fourth option is incorrect as transporting food (sugars, products of photosynthesis) is the role of phloem, not xylem.

Answer:

To transport water and nutrients from the roots to the rest of the plant