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Which best describes xylem vessels in the chapter?
AShort dividing cells producing both xylem and phloem outward
BLiving spindle cells with thick lignified walls and no pits
CPerforated long cells joined end to end as continuous channels
DSieve tubes with porous end walls and companion cells alongside
Answer & Solution
Correct answer: C. Perforated long cells joined end to end as continuous channels
1. The chapter calls vessels perforated long cells.
2. They join end-to-end into long pipes for water flow.
3. Tracheids, in contrast, are spindle-shaped with pits.
4. So option A is the correct description.
_Source: Selina Concise Biology Class 8, Ch on Transport in Plants (Mistral OCR'd PDF), Components of Xylem_
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