NCERT Solution Class X Science Heredity and Evolution Question 2 (Ex 9.6)

Question 2:

In evolutionary terms, can we say which among bacteria, spiders, fish and

chimpanzees have a ‘better’ body design? Why or why not?

Answer:

Evolution cannot always be equated with progress or better body designs. Evolution

simply creates more complex body designs. However, this does not mean that the

simple body designs are inefficient. In fact, bacteria having a simple body design are

still the most cosmopolitan organisms found on earth. They can survive hot springs,

deep sea, and even freezing environment.

Therefore, bacteria, spiders, fish, and chimpanzees are all different branches of

evolution.

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