Topic : evolution of life forms – a theory

Read the following statements carefully and choose the option with only incorrect statements a. Any population has built in variation in characteristics b. According to Darwin, the fitness refers ultimately and only to reproductive fitness c. Evolution is a stochastic process based on chance mutation in nature and chance event in organisms d. Lamarck had said that evolution of life forms had occurred but driven by use and disuse of organs

The first mammals were like A. They were B and protected their unborn young inside the mother's body. Choose the option which correctly represents A and B

Mammals directly evolved from