Which of the following group consists exclusively of cnidarians?

(1) Aplysia, Gorgonia, Spongilla, Hydra

(2) Hydra, pennatula, obelia, Echinus

(3) Hydra, obelia, adamsia, physalia

(4) Scypha, Hydra, adamsia, physalia

Subtopic:  Phylum Coelenterata |
 90%
From NCERT
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Ctenophora is an exclusively marine phylum, the other such phylum is

(1) Mollusca

(2) Echinodermata

(3) Porifera

(4) Coelenterata

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 72%
From NCERT
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Ctenophorans are commonly referred to as

(1) Flatworms

(2) Comb jellies

(3) Sea anemone

(4) Cnidaria

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 88%
From NCERT
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The number of ciliated rows present in Comb jellies are

(1) 8

(2) 6

(3) 4

(4) 9

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 94%
From NCERT
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The function of flame cells are

(1) Digestion and excretion

(2) Attachment and osmoregulation

(3) Anchorage and excretion

(4) Excretion and osmoregulation

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 89%
From NCERT
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Presence of flame cells is a characteristic feature of

(1) Nereis

(2) Taenia

(3) Hirudinaria

(4) Pheretima

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 86%
From NCERT
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Which of the following is not an excretory structure found in invertebrates?

1. Flame cells

2. Malpighian tubules

3. Nephridia

4. Kidney

Subtopic:  Phylum Chordata |
 87%
From NCERT
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Nematocytes are present in

(1) Adamsia

(2) Hirudinaria

(3) Sycon

(4) Echinus

Subtopic:  Phylum Coelenterata |
 89%
From NCERT
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Which of the following is dioecious?

(1) Taenia

(2) Fasciola

(3) Ascaris

(4) Earthworm

Subtopic:  Phylum Aschelminthes |
 75%
From NCERT
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Which of the following is called pearl oyster?

(1) Dentalium

(2) Pinctada

(3) Pila

(4) Aplysia

Subtopic:  Phylum Mollusca |
 86%
From NCERT
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