"Birds and mammals attain greater body size in colder regions than warmer regions." - Choose the correct option.

(a)

Bergmann's rule

(b)

Jordon's rule

(c)

Sewall wright effect

(d)

Allen's rule

Diapause is a type of response classifiedunder ______________

(a)

Suspend

(b)

Migrate

(c)

Conform

(d)

Regulate

Study the four statements (A to D) given below and select the two correct ones out of them.
A) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers.
B) Predator starfish Pisaster helps in maintaining species diversity of some invertebrates.
C) Predators ultimately lead to the extinction of prey species.
D) Production of chemicals such as nicotine, strychnine by the plants is disordered.
The two correct statements are

(a)

(B) and (C)

(b)

(C) and (D)

(c)

(A) and (D)

(d)

(A) and (B)

Pick out the eurythermal organism

(a)

Fish

(b)

Frog

(c)

Tiger

(d)

Lizards

Maximum reproductive capacity of an organism under favorable condition is referred to as_______________

(a)

Carrying capacity

(b)

Biotic potential

(c)

Natality

(d)

Fecundity