Question

Which statements regarding response of organisms to abiotic factors in false?

• A. All birds and mammals are capable of thermoregulation
• B. Majority of animals and nearly all plants cannot maintain a constant internal environment
• C. Shivering is a kind of exercise which produces heat and raises body temperature
• D. Very small animals are commonly found in polar regions as they have to spend less energy to generate heat
• E. Diapause is a stage of suspended development seen in zooplankton

Answer 1

The correct option is D Very small animals are commonly found in polar regions as they have to spend less energy to generate heat

Majority of animals can not regulate their body temperature with the change in environment. Thermoregulation is expensive for most of the organisms, specially smaller organisms. As heat gain and loss depends on the surface area, small animals have more surface area relative to volume, so they lose more body heat. This is why small animals are hardly found in polar regions.