Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Biology Human Physiology Glands and Hormones
Which of these is true of the endocrine system?
1
secretes hormones that are transported to target cells by blood
2
causes changes in metabolic activities
3
effects are prolonged
4
More than one of the above
5
None of the above