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Biology · PLANT KINGDOM

हिन्दी

Which of the following structural descriptions accurately details the asexual zoospores formed in brown algae?

  1. Spherical, non-motile spores with multiple apical flagella.
  2. Star-shaped motile spores with eight equal apical flagella.
  3. Pear-shaped (pyriform) biflagellated spores with two unequal laterally attached flagella.
  4. Unicellular non-flagellated spores enclosed in a thick pectose wall.

Correct answer · Option 3

Pear-shaped (pyriform) biflagellated spores with two unequal laterally attached flagella.

Explanation

Asexual reproduction in brown algae occurs via biflagellated zoospores that are pear-shaped (pyriform) and bear two unequal, laterally attached flagella.
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