Metagenesis MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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Reproduction, Development and Metagenesis in Cnidaria is considered one of the most asked concept.
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16 Questions around this concept.
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EASYMetagenesis refers to :
Concepts Covered - 1
Reproduction, Development and Metagenesis in Cnidaria
- The reproduction occurs through both asexual and sexual means.
- Budding is the common method of asexual reproduction.
- Sexual reproduction occurs through the formation of gametes.
- Cnidarians exhibit metagenesis, i.e., alternation of generation. There are two body forms:
- Polyp: It is fixed and sessile form with mouth and tentacles facing upwards (Cylindrical shaped). It reproduces asexually by budding to form the second body form.
- Medusa: It is free-floating form with mouth and tentacles facing downwards (Umbrella shaped). It reproduces sexually to form polyps.
EXAMPLES
A) Only Polyp Forms : Hydra (fresh water polyp), Adamsia (Sea Anemone)
B) Only Medusa form : Aurelia (Jelly fish)
C) Metagesis : Obelia, Physalia (Portugese man of war)
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