Class 12th Biology 2018 Set1 Delhi Board Paper Solution

Question 20

Differentiate between analogous and homologous structures.

Answer

Analogous Homologous

1. Those organ that perform similar function but different origin or structure.	1. Those organ that have same origin and structure but perform different funtions.
2. Eg. i. Wing of butterfly and wing of bat. ii. Tendril of pea and tendrils of cucurbit.	2. Eg. i. Limbs of dog and hand of human. ii. Tuber of potato and sweet potato.

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