Xylem Parenchyma MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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3 Questions around this concept.
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MEDIUMRead statements A and B and choose the correct option.
Statement A: Agrobacterium tumefaciens infects several dicot plants and transforms normal plant cells into a tumor.
Statement B: Retroviruses in animals can transform normal cells into cancerous cells.
Which of the following is a living component of the xylem?
Xylem fibres possess an obliterated central lumen due to very thick walls. This helps to perform the function of
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Concepts Covered - 1
Elements of Xylem - Xylem Fibres and Xylem Parenchyma
Elements of Xylem - Xylem Fibres and Xylem Parenchyma
Xylem Fibres:
- These are the sclerenchymatous fibres.
- These are not involved in the conduction of water.
- These are dead cells devoid of protoplasm.
- These provide mechanical strength.
Xylem Parenchyma:
- These are the parenchymatous cells associated with xylem.
- These represent the only living component of the complex tissue xylem.
- These are of two types:
- Axial/wood parenchyma: these are vertically arranged parenchyma that can develop into vessels and other members.
- Ray parenchyma: these are horizontally arranged parenchyma that are responsible for the lateral conduction of water.
- If xylem parenchyma is present in the diffused form, it is called apotracheal parenchyma.
- If xylem parenchyma is present compactly around the xylem vessel, it is called paratracheal parenchyma.
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