The stems of submerged water plant are soft and weak because:
Correct answer: B. The supporting tissues and xylem are feebly developed
- A. They are absolutely devoid of xylem
- B. The supporting tissues and xylem are feebly developed
- C. They do not have stomata
- D. They totally lack phloem
Explanation
Submerged plants receive buoyant support from water, so they require little mechanical tissue; their xylem and supporting tissues consequently remain poorly developed. They still possess vascular tissues, and the absence of stomata is not the cause of stem weakness.
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