Which of the following cnidarians are radially symmetrical and sessile?

(1) Hydra

(2) Aurelia

(3) Adamsia

(4) Both (1) and (3)

Subtopic:  Phylum Coelenterata |
 84%
From NCERT
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Hermaphroditism is found in which phyla?

(1) Ctenophora

(2) Platyhelminthes

(3) Porifera

(4) All of these.

Subtopic:  Phylum Porifera | Phylum Ctenophora & Platyhelminthes |
 76%
From NCERT
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Match the following cells/structures with their phyla of origin

1) Flame cells (i) Coelenterata
2) Choanocytes   (ii) Platyhelminthes
3) Cnidocytes (iii)   Ctenophora
4)   Comb plates (iv) Porifera

(1) 1-(i), 2-(iv), 3-(ii), 4-(iii)

(2) 1-(iii), 2-(ii), 3-(iv), 4-(i)

(3) 1-(ii), 2-(iv), 3-(i), 4-(iii)

(4) 1-(ii), 2-(iii), 3-(i), 4-(iv)

Subtopic:  Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes |
 88%
From NCERT
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Digestive system consists of a mouth and anus in which animals

(1) Ancylostoma

(2) Wuchereria

(3) Adamsia

(4) Both (1) and (2)

Subtopic:  Phylum Aschelminthes |
 88%
From NCERT
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A high regeneration capacity is present in

(1) Planaria

(2) Ancylostoma

(3) Sepia

(4) Sea cucumber

Subtopic:  Phylum Ctenophora & Platyhelminthes |
 96%
From NCERT
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Limbs are present in

(1) Osteichthyes

(2) Chondrichthyes

(3) Reptiles

(4) urochordates

Subtopic:  Study of Reptilia |
 86%
From NCERT
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Which of the following statement/s about chondrichthyes are incorrect?

1) Notochord is persistent throughout life

2) Endoskeleton is made up of bones

3) Operculum present

4) Skin is covered by placoid scales

(1) All of the above

(2) None of the above

(3) 1 and 4 are incorrect

(4) 2 and 3 are incorrect

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 76%
From NCERT
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Which of the following animal has a bony endoskeleton?

(1) Exocoetus

(2) Clarias

(3) Pristis

(4) both (1) and (2)

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 86%
From NCERT
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In which of these examples are the members exclusively chondrichthyes

(1) Scoliodon, Pristis, Labeo, Betta

(2) Scoliodon, Pristis, Betta, Trygon

(3) Scoliodon, Trygon, Pristis, Carcharodon

(4) Scoliodon, labeo, Carcharodon, Pristis

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 86%
From NCERT
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Dry, cornified skin along with epidermal scales or scutes is found in

(1) Tortoise

(2) Hyla

(3) Bufo

(4) All of the above

Subtopic:  Study of Reptilia |
 62%
From NCERT
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