Question

HURRY PLZ WILL MARK BRAINLIEST

Answer 1

Answer:

The answer is 'D'- Their arm bones have the same structure, but not function. These are homologous structures.

Explanation:

Homologous structures are those which share a basic common structure but perform different function. The hand of a human performs functions like writing, cutting, washing, chopping etc. The wings of a bat are used for the purpose of flying.

Also, a dolphin's flippers, a bird's wing, a cat's leg are all homologous structures. The structures which are homologous have the following features:

1. They share a common origin
2. Their anatomy is similar
3. They have a similar pattern of development.

Answer 2

Answer:

Their arm bones have the same structure, but not function.

Explanation: