Home › CBSE Class 11 › biology › Plant Kingdom — Algae (Chlorophyceae/Phaeophyceae/Rhodophyceae), Bryophytes, Pteridophytes, Gymnosperms, Angiosperms › Identify the algal class with NO flagella on its…
Identify the algal class with NO flagella on its motile cells.
AAll three classes have flagellated cells
BChlorophyceae (2-8 flagella, equal, apical)
CPhaeophyceae (2 flagella, unequal, lateral)
DRhodophyceae — flagella ABSENT; gametes are NON-MOTILE; sexual reproduction is oogamous with non-motile gametes
Answer & Solution
Correct answer: D. Rhodophyceae — flagella ABSENT; gametes are NON-MOTILE; sexual reproduction is oogamous with non-motile gametes
Red algae (Rhodophyceae) lack flagella — gametes are non-motile, complex post-fertilisation development. Chloro: 2-8 equal apical; Phaeo: 2 unequal lateral; Rhodo: absent (per Table 3.1).
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