Which one is wrongly matched?
Answer: (C) Uniflagellate gametes – Polysiphonia. Answer: (C) Uniflagellate gametes – Polysiphonia.
- A.Gemma cups – Marchantia
- B.Biflagellate zoospores – Brown algae
- C.Uniflagellate gametes – Polysiphonia✓
- D.Unicellular organism – Chlorella
Correct Answer
(C) Uniflagellate gametes – Polysiphonia
Solution & Explanation
Answer: (C) Uniflagellate gametes – Polysiphonia. Solution: Polysiphonia is a red alga (Rhodophyceae), which reproduces sexually by NON-MOTILE (non-flagellated) gametes, so 'Uniflagellate gametes – Polysiphonia' is the wrong match. The others are correct: Marchantia (a liverwort) bears gemma cups; brown algae (Phaeophyceae) produce biflagellate zoospores; and Chlorella is a unicellular green alga. NCERT Reference: Class XI Biology, Plant Kingdom, p.27-28 — "The red algae usually reproduce vegetatively by fragmentation. They reproduce asexually by non-motile spores and sexually by non-motile gametes" (p.27 lines 27-29 continuing to p.28 line 3).