(a) Compare, giving reasons, the J-shaped and S-shaped models of population growth of a species.
(b) Explain ‘‘fitness of a species’’ as mentioned by Darwin.
(a)
J-shaped growth curve | S-shaped growth curve |
Resources are unlimited | Resources are limited. |
Growth is exponential. | Logistic growth. |
Growth equation : |
Growth equation: |
(b) When resources are limited, competition occurs between individuals, fittest will survive who reproduce to leave more progeny.