BIOLOGY 1.5 Marks Questions

Attempt giving a clear definition of the term species.

The process of evolution of different species starts from one point in a geographical area and spreads to other geographical areas. Explain with examples.

Explain the difference between homologous and analogous organs with examples.

Write briefly Hardy weinberg Law.

What is genetic equilibrium? Write any four factors affecting Hardy-Weinberg equilibrium law.

How does animal classification prove biological evolution?

(i) Write what differences you see in the Darwin’s finches shown above.
(ii) How did Darwin explain the existence of different types of finches on galapagos?

What do you understand by spontaneous generation?

Write a short note on the origin of life from space.

What is called Atavism or reversion? Give any two examples of this.