Botany - Animal Kingdom Question with Solution | TestHub
BotanyAnimal KingdomCnidaria and CtenophoraEasy2 minPYQ_2020
BotanyEasysingle choice
Metagenesis or alteration of generation can be observed in members of phylum
Options:
Answer:
A
Solution:
Metagenesis (or alternation of generation) Coelenterates exhibit two body forms: polyp and medusa.
A. Polyp = Sessile and cylindrical likeHydra,Adamsia.
B. Medusa = Free swimming, umbrella shaped likeAurelia (jelly fish). Those cnidarians in which both polyp and medusa alternates with each other, are said to exhibit metagenesis. During metagenesis, polyp (asexual stage) reproduce asexually to form medusa, whereas the medusa (sexual stage) sexually reproduce to form polyp, e.g.,Obelia.
Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Animal KingdomSubtopic:Cnidaria and Ctenophora
⏱ 2mℹ️ Source: PYQ_2020
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