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Question

Pancreas is absent in which group of vertebrates

A
Reptiles
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B
Cyclostomates
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C
Birds
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D
Mammals
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Solution

The correct option is B Cyclostomates
Pancreas is absent in cyclostomates, a class of Agnatha. The pancreas is derived from the endoderm of embryo. It lies inferior to the stomach in a bend of the duodenum It is both an exocrine and endocrine gland.

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