Multiple Choice
In most vascular plants, which structure is primarily responsible for absorbing water from the soil?
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33. Plant Anatomy
Roots and Shoots
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In most terrestrial plants, which structure is primarily responsible for absorbing water and dissolved minerals from the soil?
A
Flowers (petals and sepals)
B
Xylem vessels in the stem
C
Root hairs (epidermal extensions of young roots)
D
Stomata on leaves
Verified step by step guidance1
Identify the main function described in the question: absorbing water and dissolved minerals from the soil.
Recall the structures of terrestrial plants and their primary functions: flowers (petals and sepals) are involved in reproduction, xylem vessels transport water but do not absorb it, stomata regulate gas exchange and water loss.
Focus on the root system, specifically the root hairs, which are extensions of the epidermal cells of young roots and increase the surface area for absorption.
Understand that root hairs are specialized for absorbing water and minerals directly from the soil, making them the primary structure responsible for this function.
Conclude that among the options given, root hairs are the correct answer because they maximize water and mineral uptake from the soil.
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