Xylem Parenchyma MCQ - Practice Questions with Answers
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12 Questions around this concept.
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MEDIUMParatracheal parenchyma is associated with
Apotracheal parenchyma is
Xylem fibers possess obliterated central lumen due to very thick walls. This helps to perform the function of
Which of the following is a living component of the xylem?
Which of the following components of cortes checks the water loss from the xylem elements?
Which one of the following statements is true about xylem in plants?
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
Read 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.
Concepts Covered - 1
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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