Multiple choice

Which of the following tissues is composed of mainly dead cells?

  1. pholem

  2. xylem

  3. endodermis

  4. epidermis
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B Correct answer
Explanation

Xylem tissue is primarily composed of dead cells at functional maturity, such as tracheids and vessel elements, which lose their cytoplasm to form hollow tubes for efficient water transport. In contrast, phloem, epidermis, and endodermis consist mainly of living cells that carry out active metabolic processes.

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