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Reproduction In Organisms

Question
CBSEENBI12002409
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Male gametes are flagellated in

  • Polysiphonia

  • Anabaena

  • Ectocarpus

  • Spirogyra

Solution

C.

Ectocarpus

Male gametes are flagellated in Ectocarpus belonging to Phaeophyceae. The flagella of male and gamete plays an important role in establishing initial sexual contact with the female gamete. However, in Ectocarpus the female gamete too is flagellated but is different in structure. 
In Polysiphonia (Rhodophyceae) flagellated gametes are not observed, in Anabaena sexual reproduction through gametes is absent while in Spirogya sexual reproduction takes place by conjugation wherein male gamete passes through a tube to the adjacent filament. The male gametes here are non-flagellated and show amoeboid movement. 

Some More Questions From Reproduction in Organisms Chapter

 Frog is ................... while human female is ....................

Testes lie in ................... while ovaries lie in ....................

 In Rhizopus, asexual reproduction takes place  by...................formation.

....................in Penicillium are formed on conidiophores.

In sweet potato, vegetative propagation takes place through............

In Bryophyllum vegetative propagation takes place through.............

Period of sexual maturity.

A mechanical and physiological connection between foetus and mother.

Repair of damaged tissue or redevelopment of lost part.

The zygotic nucleus.

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