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Question
Free swimming larva of Obelia is
Free swimming larva of Obelia is
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Solution
The correct option is A Planula
The planula is the free-swimming, flattened, ciliated, bilaterally symmetric larval form of various Cnidarian species. Planula attaches itself to the hard substrata and transforms into the young through metamorphosis. Obelia is the genus in the class Hydrozoa of the phylum Cnidaria.
Amphiblastula is the larva of sponges.
In Hydra, after fertilization, the zygote undergoes complete cleavage and a hollow blastula is formed which changes into a solid stereogastrula.
Therefore, the correct answer is option A.
The planula is the free-swimming, flattened, ciliated, bilaterally symmetric larval form of various Cnidarian species. Planula attaches itself to the hard substrata and transforms into the young through metamorphosis. Obelia is the genus in the class Hydrozoa of the phylum Cnidaria.
Amphiblastula is the larva of sponges.
In Hydra, after fertilization, the zygote undergoes complete cleavage and a hollow blastula is formed which changes into a solid stereogastrula.
Therefore, the correct answer is option A.
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