SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Adult medusae release their eggs and sperm in the water where fertilization occurs, creating a zygote.
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The eggs of a medusa are fertilized inside its body and the medusa gives live birth.
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The medusa self-fertilizes and the medusa lays shelled eggs
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The medusa reproduces through binary fission.
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Detailed explanation-1: -Medusae primarily reproduce by sexual reproduction with the formation of a larval stage called the planula. The planula then develops into a polyp that can reproduce either sexually or asexually. One type of asexual reproduction by polyps leads to the formation of new medusae.
Detailed explanation-2: -Throughout their lifecycle, jellyfish take on two different body forms: medusa and polyps. Polyps can reproduce asexually by budding, while medusae spawn eggs and sperm to reproduce sexually.
Detailed explanation-3: -The fertilised eggs hatch into tiny free-swimming flatworms called planulae, which either develop directly into adult jellyfish or settle on rocks to form an intermediate polyp stage.
Detailed explanation-4: -Cnidarians reproduce both sexually and asexually. Some species can produce both eggs and sperm in the same organism. These organisms are called simultaneous hermaphrodites and release gametes into the ocean in egg-sperm bundles. Some species are also either male or female and produce either eggs or sperm.
Detailed explanation-5: -The medusa is the reproductive stage; their eggs are fertilised internally and develop into free-swimming planula larvae. After a brief period floating about in surface waters, the larvae settle to the sea floor, attaching themselves at one end. There they develop into polyps and begin to feed and grow.