Why may leaves wilt if xylem is blocked in a plant?
Answer and explanation
Correct answer: Because water and minerals will not reach the leaves
The governing concept is xylem transport and cell turgidity. Xylem vessels carry water and dissolved mineral ions upward from roots to stems and leaves. Leaf cells need water to maintain turgor pressure, support photosynthesis and prevent excessive loss of firmness. If xylem is blocked, the water supply falls, cells lose turgidity and leaves may droop or wilt. Hence option A is correct; the other choices refer to animal organs or unrelated substances.
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What is the correct answer to this question?
Because water and minerals will not reach the leaves
Why is this the correct answer?
The governing concept is xylem transport and cell turgidity. Xylem vessels carry water and dissolved mineral ions upward from roots to stems and leaves. Leaf cells need water to maintain turgor pressure, support photosynthesis and prevent excessive loss of firmness. If xylem is blocked, the water supply falls, cells lose turgidity and leaves may droop or wilt. Hence option A is correct; the other choices refer to animal organs or unrelated substances.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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