Question

Antherozoids of Selaginella has

• A. Elongated body with many flagella
• B. An elongated body with two flagella at one end
• C. Top shaped body with many flagella
• D. Oval body with two flagella at one end

Answer 1

The correct option is B An elongated body with two flagella at one end

Selaginella is heterosporous as it produces two sizes of spores: small spores (termed microspores) that germinate to produce the male gametophyte; and larger spores (megaspores) that germinate to produce the female gametophyte.The microgametophytes produce sperm equipped with flagella that enable them to swim to the eggs generated by a megagametophyte through water, either in the form of dew or rain, in order to achieve fertilization. In contrast to other Pteridophytes, Selaginella has biflagellate gametes, a characteristic feature of Bryophytes. Male gamete or antherozoids are uninucleate.