Plant water uptake: Identify the structures through which plants absorb most of the water they need. Full question: Plants absorb the major part of their water requirement primarily through which root structures? Choose the correct option.

Difficulty: Easy

Root hairs
Stomata
Leaves (cuticle)
Stem epidermis
Flower tissues

Correct Answer: Root hairs

Explanation:

Concept
Root hairs dramatically increase absorptive surface area and are the principal sites for water and mineral uptake from the soil solution.

Why others are incorrect
Stomata regulate gas exchange and transpiration; stems/leaves are not the main water-absorbing organs.

Final Answer
Root hairs.

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