Q2 of 29 Page 158

In evolutionary terms can we say which among bacteria, spiders, fish and chimpanzees have a 'better' body design? Why or why not?

Bacteria has a better body design in evolutionary terms because they can survive hot springs, deep sea and even freezing environment which most of the other organisms cannot.


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3

What are fossils? What do they tell us about the process of evolution?

 1

Why are human beings who look so different from each other in terms of size, color and looks said to belong to the same species?

 1

A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as:

Give reason for your choice.

 2

An example of homologous organs is: