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Metagenesis MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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Reproduction, Development and Metagenesis in Cnidaria is considered one of the most asked concept.
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7 Questions around this concept.
Solve by difficulty
Which of the following shows the perfect formation of the polyp and medusa stage?
Asexual reproduction by budding is found in
In Coelenterata, the cleavage of the zygote is
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The highest degree of polymorphism is found in
Mars of nodal tissue at the lower left corner of right atrium cells to atrioventricular septum called
Metagenesis refers to
Which of the following is diploblastic?
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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