Population growth may be exponential or logistic. Differentiate between them.

Proteins are essential for growth in animals. Differentiate between globular and fibrous proteins.

Population interaction may be beneficial or not. Write any three ineractions in detail.

If a population growing exponentially doubles in size in 3 years, what is the intrinsic rate of increase (r) of the population?

Figures (X) and (Y) are the fish of two different classes. Identify them and differentiate between these classes, X, Y.

Two examples of fishes are given. - Scoliodon (Dogfish) - Exocoetus (Flying fish). a) Place them in two distinct classes. b) Differentiate the above classes on the basis of two important characters.