NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM ANIMALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Gnathostomata means
A
Absence of jaw
B
Oval shaped jaw
C
Circular jaw
D
Presence of jaw
Explanation: 

Detailed explanation-1: -Gnathostomata (/ˌnæoʊˈstɒmətə/; from Greek: (gnathos) “jaw” + (stoma) “mouth") are the jawed vertebrates. Gnathostome diversity comprises roughly 60, 000 species, which accounts for 99% of all living vertebrates, including humans.

Detailed explanation-2: -Learning Objectives. Gnathostomes or “jaw-mouths” are vertebrates that possess jaws. One of the most significant developments in early vertebrate evolution was the development of the jaw, which is a hinged structure attached to the cranium that allows an animal to grasp and tear its food.

Detailed explanation-3: -The jaw in gnathostomes (jawed vertebrates) is one of the earliest innovations in the evolution of vertebrates and is derived from the mandibular arch (MA).

Detailed explanation-4: -: a superclass or other division of Vertebrata comprising those with jaws compare agnatha.

Detailed explanation-5: -Jawed fish include cartilaginous and bony fish. Cartilaginous fish include sharks, rays and, skates.

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