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Coelenterata

Medusa of Obe...

Question

Medusa of Obelia is

A

Carnivorous

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B

Harbivorous

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C

Detritous feeder

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D

Omnivorous

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Solution

The correct option is A Carnivorous
Obelia is a marine colonial trimorphic hydrozoan. It shows the presence of polyp, medusa and blastostyle stages in its life history. It is abundant in both Atlantic and Pacific coastal waters. A fully grown Obelia medusa is a radially symmetrical tiny umbrella, measuring 1 or 2 mm in diameter. Medusa is carnivorous and feeds on planktons.
So, the correct answer is option A.

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Similar questions

Q. Assertion [A]: Obelia exhibits metagenesis.
Reason [R]: Obelia exists in both polyp and medusa form.

Q. Read the following statements and choose the correct options
I. Pelvic fins of female sharks bear claspers.
II. In Obelia polyps produce medusae sexually and medusae asexually.
III. Flame cells in platyhelmintes help in osmoregulation and excretion.
IV. In nonchordates, central nervous system is ventral, solid and double.
V. Pinnae are present in mammals.

Q. Find out the incorrect statement(s).

I. Polyp is sessile and cylindrical like Adamsia

II. Medusa is umbrella shaped and free-swimming like Aurelia

III. Polyps produce medusae sexually and medusae form the polyps asexually

IV. Medusae produce polyps sexually

Q. Gonads of Obelia occur

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