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A conjoint vascular bundle in which xylem lies towards the centre and phloem towards the periphery is called:
ABicollateral
BAmphicribral
CAmphivasal
DCollateral
Answer & Solution
Correct answer: D. Collateral
1. In conjoint bundles xylem and phloem lie on the same radius.
2. In the collateral type, xylem is towards the centre and phloem towards the periphery.
3. So this describes a collateral bundle.
4. In bicollateral bundles phloem lies on both sides of xylem, which is a different pattern, so it is ruled out.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 12 Plant Anatomy and Plant Physiology "Conjoint bundles", p.181_
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