Question

What is the meaning of "ectothermic animal"?
A. The animals whose body temperature does not vary with environmental temperature.
B. The animals who can maintain their body temperature.
C. The animals whose body temperature varies with environmental temperature.
D. All of the above.

Answer 1

Hint: Most creatures need to keep up their center internal heat level inside a generally limited range. Endotherms utilize inside created warmth to keep up internal heat level. Ectotherms rely essentially upon outer warmth sources, and their internal heat level changes with the temperature of the climate.

Complete Answer:
- Ectotherms animals: Ectotherm, any purported relentless creature—that is, any creature whose guideline of internal heat level relies upon outer sources, for example, daylight or a warmed stone surface.
- The ectotherms incorporate the fishes, creatures of land and water, reptiles, and spineless creatures. The internal heat level of an oceanic ectotherm is typically exceptionally near the temperature of the encompassing water.
- Ectotherms don't need as much food as warm-blooded creatures (endotherms) of a similar size do however might be all the more drastically influenced by temperature variances.
- Ectotherms that live in locales where temperatures vary occasionally stay away from limits by taking sanctuary in tunnels or comparative areas or by getting torpid somewhat (e.g., in winter, fish may rest close to the lower part of a waterway).
- Moreover, ectotherms utilize biochemical techniques to battle the impacts of extraordinary temperatures.
- Since exorbitant warmth can harm proteins in a creature's body, during times of warmth stress, ectotherms discharge heat-stun proteins, which help settle different proteins and accordingly forestall their denaturation (adjustment of a protein's atomic structure).

Thus, the option (C) is correct.

Note: Ectothermic animal (poikilothermic) is an animal that maintains its body temperature by absorbing heat from the surrounding environment. All animals except mammals and birds are ectotherms; they are often described as being cold-blooded and are unable to regulate their body temperature metabolically.