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Sclerenchyma fibres are absent in...

Sclerenchyma fibres are absent in

A

Protoxylem

B

Protopholem

C

Metaxylem

D

More than one option is correct

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Sclerenchyma Fibres:** - Sclerenchyma fibres are a type of supportive tissue in plants. They are known for their thick, lignified cell walls and are typically dead at maturity. 2. **Identifying the Types of Xylem:** - Xylem is composed of different types of cells, including tracheids, vessel elements, and xylem fibres. Xylem is responsible for the transport of water and minerals. 3. **Differentiating Between Proto-xylem and Meta-xylem:** - Xylem can be divided into proto-xylem and meta-xylem. Proto-xylem develops first and is typically found in younger parts of the plant, while meta-xylem develops later and is found in older parts of the plant. 4. **Presence of Sclerenchyma Fibres:** - Sclerenchyma fibres are typically associated with meta-xylem. They provide structural support and are not present in proto-xylem due to the nature of its development and function. 5. **Conclusion:** - Since sclerenchyma fibres are not found in proto-xylem, the correct answer to the question "Sclerenchyma fibres are absent in" is proto-xylem. **Final Answer:** Sclerenchyma fibres are absent in proto-xylem. ---
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