Question

Fill in the blanks. 

1. The characters developed by the animals during their life time, in response to the environmental changes are called ……….. 

2. The degenerated and non-functional organs found in an organism are called ………. 

3. The forelimb of bat and human are examples of ………. organs. 

4. The theory of natural selection for evolution was proposed by ……….

Answer 1

1. acquired characters 

2. vestigial organs 

3. homologous

4. Charles Darwin