What are the organs called that perform different functions but have a similar basic structure?

Relative method and carbon dating are the methods to know about evolution.

When Mendel crossed a tall plant with a dwarf plant,what was the ratio of dwarf plants in the $F_{2}$ generation (in $, \%$)?

$(a)$ Differentiate between:
$(i)$ Homologous organs and Analogous organs
$(ii)$ Pollination and Fertilisation
$(b)$ What do fossils tell us about the process of evolution?

Which of the following organs,when found to be present in two animals,indicate that these two animals have been evolved from a common ancestor?

In human beings,the statistical probability of getting either a male or female child is $50 : 50$. Give a suitable explanation.