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Which of the following is correct w.r.t external fertilization?
Organisms exhibiting external fertilization do not need synchrony between the sexes.
Organisms exhibiting external fertilization release less number of gametes into the surrounding medium.
External fertilization occurs inside the body of the organism.
None of these
Answers (1)
- In most aquatic organisms, such as a majority of algae and fishes as well as amphibians, syngamy occurs in the external medium (water), i.e., outside the body of the organism. This type of gametic fusion is called external fertilization. Organisms exhibiting external fertilization show great synchrony between the sexes and release a large number of gametes into the surrounding medium (water) in order to enhance the chances of syngamy.
Hence, the correct answer is option d.
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