Biology · ANIMAL KINGDOM

Which anatomical combination of mouth position, exoskeleton type, and respiratory cover distinguishes Chondrichthyes from Osteichthyes?

A
Osteichthyes: Terminal mouth, placoid scales, gill slits without operculum
B
Chondrichthyes: Terminal mouth, cycloid scales, gill slits with operculum
C
Osteichthyes: Ventral mouth, placoid scales, gill slits without operculum
D
Chondrichthyes: Ventral mouth, placoid scales, gill slits without operculum

Correct answer · Option D

Chondrichthyes: Ventral mouth, placoid scales, gill slits without operculum

Explanation

Chondrichthyes have a ventral mouth, placoid scales (which modify into backwardly directed teeth), and separate gill slits without an operculum. Osteichthyes have a terminal mouth, cycloid/ctenoid scales, and operculum covering 4 pairs of gills.

Which anatomical combination of mouth position, exoskeleton type, and respiratory cover distinguishes Chondrichthyes from Osteichthyes?

Correct answer · Option D

Explanation

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Which anatomical combination of mouth position, exoskeleton type, and respiratory cover distinguishes Chondrichthyes from Osteichthyes?

Correct answer · Option D

Explanation

Related questions

ऑनलाइन कंप्यूटर आधारित परीक्षा

उपयोगी लिंक

महत्वपूर्ण पेज

कोर्सेज और अभ्यास

संपर्क करें

साझा करें