I am an exclusively marine, radially symmetrical, diploblastic organism with a tissue level of organisation. My body bears eight external rows of ciliated comb plates, which help in locomotion. Bioluminescence is well-marked in me. Who am i?

Arthropoda

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Echinodermata

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Annelida

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Ctenophora

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Solution

The correct option is D Ctenophora
Ctenophores, commonly known as sea walnuts or comb jellies. They are exclusively marine, radially symmetrical, diploblastic organisms with tissue levels of organisation. The body bears eight external rows of ciliated comb plates, which help in locomotion. Bioluminescence is the property of a living organism to emit light, which is seen in ctenophores. Examples: Pleurobrachia and Ctenoplana.

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Similar questions

Q. Consider the following features

A. Exclusively marine, radially symmetrical,diploblastic organisms with tissue level of organisation.
B. The body bears eight external rows of ciliary comb plates.
C. Digestion is both extra cellular and intra cellular.
D. Exhibit Bioluminescence.

The above mentioned features belong to the animal

Q. The characters given below are shown by
(i) Extracellular and intracellular digestion
(ii) Exclusively marine, radially symmetrical, diploblastic, tissue revel of organisation
(iii) Bisexual, fertilisation external and indirect development
(iv) No asexual reproduction
(v) Presence of comb plates

Q. Read the following statements:
(i) Exclusively marine
(ii) The body bears eight rows of ciliary comb plates
(iii) Comb plates help in adhesion
(iv) Sexes are separate
(v) Fertilisation is external with direct development

How many statements is/are correct for ctenophores?

Q. Which phylum do I belong to? I am a marine living animal with spiny skin. My body is radially symmetrical _________.

Identify me.
a. I am diploblastic & acoelomate. Which phylum do I belong to?
b. My body is radially symmetrical. Water vascular system is present in my body. I am referred as fish though I am not. What is my name?
c. I live in your small intestine. Pseudocoelom is present in my thread like body. In which phylum will you include me?
d. Though I am multicellular, there are no tissues in my body. What is the name of my phylum?

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