How many organisms given below are conformers?

Snake, Fish, Rat, Human, Frog

Solution:

Conformers are organisms that cannot maintain a constant internal environment (e.g., body temperature, osmotic concentration) and their internal conditions change with the external environment. Regulators, in contrast, can maintain a constant internal environment regardless of external fluctuations.

Let's analyze the given organisms:

• Snake: A reptile, which is an ectotherm (cold-blooded). Its body temperature fluctuates with the ambient temperature. Hence, it is a conformer.

• Fish: An aquatic vertebrate, typically ectothermic. Its body temperature changes with the water temperature. Hence, it is a conformer.

• Rat: A mammal, which is an endotherm (warm-blooded). It maintains a relatively constant internal body temperature. Hence, it is a regulator.

• Human: A mammal, which is an endotherm (warm-blooded). Humans maintain a constant internal body temperature. Hence, they are regulators.

• Frog: An amphibian, which is an ectotherm (cold-blooded). Its body temperature fluctuates with the environmental temperature. Hence, it is a conformer.

From the list, Snake, Fish, and Frog are conformers. There are three conformers.