Question:
Which one of the following characters is not shared by both Selaginella and Cycas?
Which one of the following characters is not shared by both Selaginella and Cycas?
Show Hint
In gymnosperms like Cycas, the gametophyte is entirely dependent on the sporophyte --- no free-living stage.
Updated On: May 26, 2026
- Presence of Xylem and Phloem
- Presence of archegonia
- Heterospory
- Independent gametophyte
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Comparison of Selaginella (lycopsid) and Cycas (gymnosperm).
Step 2: Meaning
Both are vascular plants with heterospory, but differ in their gametophyte independence.
Step 3: Analysis
(A) Xylem and Phloem: Both are vascular --- shared.
(B) Archegonia: Both Selaginella and Cycas possess archegonia --- shared.
(C) Heterospory: Both produce microspores and megaspores --- shared.
(D) Independent gametophyte: Selaginella has a free-living (though tiny) gametophyte. Cycas, as a gymnosperm, has a gametophyte entirely dependent on and retained within the sporophyte --- not shared.
Step 4: Conclusion
Independent gametophyte is not shared; Cycas gametophytes are fully dependent on the sporophyte. Final Answer: (D)
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