Question

Which of the following statements is incorrect ?
A. Osmoconformers are able to maintain osmotic concentration of their cells by either physiological or behavioural means.
B. Most vertebrates, except the birds and mammnals are unable to thermoregulate.
C. Success of mammals is mainly due to their ability to thermoregulate and live comfortably whether they are in Antarctica or in Sahara desert.
D. None of these

Answer 1

Correct Answer - A
Osmoconformers are the organisms that change the osmotic concentration of their body with the change in ambient conditions. Their body fluids are in osmotic balance with the environment. For many marine invertebrates the osmolarity and ionic concentrations of their body fluids are similar to those of the sea water in which they live.