Q.

Which of the following endocrine glands is unpaired

1 Adrenal  
2 Pituitary  
3 Testes  
4 Ovary  

Ans.

(2)

The pituitary gland, also known as the hypophysis, is a pea-sized endocrine gland. It is a protrusion at the base of the brain, at the bottom of the hypothalamus. It is a gland which is not paired. Adrenal, ovary and testes are paired glands.