Question

84. Flagellated male gametes are present in all the three of
which one of the following sets?
a. Anthoceros, Funaria and Spirogyra
b. Zygnema, Saprolegnia and Hydrilla
c. Fucus, Marsilea and Calotropis
d. Riccia, Dryopteris and Cycas​

Answer 1

Answer:

d

Explanation:

Flagellated male gametes are present in Riccia,Dryopteris and Cycas. The male gametes of bryophytes are biflagellete, and those of pteriodophytes are multiflagellate, except Selaginella having biflagellate gametes. The male gametes of gymnosperms are non motile except those of Cycas having multiciliate gametes. Hence option A is correct

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Answer 2

Explanation:

Flagellated male gametes are present in Riccia,Dryopteris and Cycas. The male gametes of bryophytes are biflagellete, and those of pteriodophytes are multiflagellate, except Selaginella having biflagellate gametes. The male gametes of gymnosperms are non motile except those of Cycas having multiciliate gametes. Hence option A is correct.