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Which of the following represents the correct combination without any exception?

Which of the following represents the correct combination without any exception?Characteristics – Class

Options

(a) Mouth ventral, gills withoutoperculum; skin with placoidscales; persistent notochord – Chondrichthyes
(b) Sucking and circular mouth;jaws absent, integument without scales;paired appendages – Cyclostomata
(c) Body covered with feathers; skin moist and glandular;fore-limbs form wings; lungs with air sacs – Aves
(d) Mammary gland; hair on body;pinnae; two pairs of Limbs – Mammalia

Correct Answer:

Mouth ventral, gills withoutoperculum; skin with placoidscales; persistent notochord – Chondrichthyes

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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