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Class Chondrichthyes

Identify the ...

Question

Identify the class of vertebrates which is characterised by the presence of cartilaginous endoskeleton, placoid scales, two chambered heart and poikilothermic.

A

Cyclostomata

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B

Chondrichthyes

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C

Osteichthyes

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D

Amphibia

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Solution

The correct option is B Chondrichthyes
All the characters given belong to chondrichthyes (sharks, rays, skates).

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Similar questions

Q. Identify the class of vertebrates which is characterised by the presence of cartilaginous endoskeleton, placoid scales, two chambered heart and poikilothermic.

Q. Identify the pairs that are correctly matched.

(i)	Crocodile	Four chambered heart
(ii)	Sea urchin	Parapodia
(iii)	Obelia	Metagenesis
(iv)	Chondrichthyes	Placoid scales

Q. Identify the pairs that are correctly matched.

(i)	Crocodile	Four chambered heart
(ii)	Sea urchin	Parapodia
(iii)	Obelia	Metagenesis
(iv)	Chondrichthyes	Placoid scales

Q. Observe the given set of characteristics and identify the class of vertebrata they belong to:
i. Cartilaginous or bony endoskeleton
ii. Poikilothermal
iii. Spindle shaped body

Q. On the basis of characteristics given below name the phyIum or class for each:
Presence of vertebral column, respiration by skin, three chambered heart ______.

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