Question

10. The basic purpose behind the evolution of wings in birds is A. To help them to fly B. To provide protection against cold C. To provide sexual attraction D. To protect from the enemies​

Answer 1

Answer:

A ) to help them to fly

Explanation:

becouse anologous organs

Answer 2

Answer:

The basic purpose behind the evolution of wings in birds is to help them to fly.

Option A. To help them to fly is the right answer.

Explanation:

• Contrary to the homologous organs, the analogous organs are morphologically and embryonically different but functionally are apparently similar.
• For example, anatomical evidence such as the wings of a bird, a butterfly, a bat and a pterodactyl (a flying reptile) support the body in flight but their basic structure is totally different.
• The wings of an insect are lifeless, formed of the thin flap of chitin and flaps by muscles attached at the base.
• In pterodactyl, the wing is an enormous fold of skin supported by an elongated 4th figure.
• In birds, the entire forelimb is modified into wings.

• In a bat, (mammal), the wing is formed of a fold of skin supported by the elongated phalanges of the last four digits.

• Similarly, the body shapes of fish, ichthyosaurs and whales are analogous having no common ancestry.

• Hence this anatomical evidence shows the evolution of wings in birds for the purpose of flight or to help them fly.

Thus option A. is the most accurate answer.

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