Read the following statements and select the correct ones.
i) All vertebrates are capable of osmoregulation and thermoregulation.
ii) Some species have evolved the ability to regulate, but only over a limited range of environmental conditions, beyond which they simply conform.
iii)99 per cent of animals and nearly all plants can- not maintain a constant internal environment. -
iv)Animals arc either perfect regulators or perfect conformers.

Options

A. (i) and (ii)
B. (H) and (iii)
C. (iii) and (iv)
D. (i) and (iv)

Answer

B