NEET2007ZoologyChemical Coordination and IntegrationActual
Compared to a bull a bullock is docile because of:
Options
- Ahigher levels of cortisone
- Blower levels of blood testosterone
- Clower levels of adrenaline/ noradrenaline in its blood
- Dhigher levels of thyroxine.
Correct answer
B. lower levels of blood testosterone
Step-by-step solution
Testis is degenerated in bullock because of which the testosterone level in blood is reduced. This hormone promotes the growth of many body tissues such as muscles. However, in bull, it is active, thereby adding greater musculature; bulls are not docile like bullocks.