Answer :

(i) False because pituitary gland is an endocrine gland and secretes hormone only.

(ii) The given statement is false as thyroxine is the only hormone secreted by thyroid gland. Insulin is not secreted by thyroid gland, it is secreted by the pancreas.

(iii) The given statement is true because leydig cells of the testis are responsible for the secretion of male sex hormone i.e. testosterone. Testosterone is secreted by Leydig cells.

(iv) Yes, the given statement is true as pancreas exhibit dual nature being exocrine and endocrine gland both. The islets of Langerhans is the endocrine part which secretes hormone insulin and glucagon. While acinar cells secrets various enzymes like chymotrypsin, lipases which help in digestion of foods.

Therefore, pancreas produces both enzymes and hormones.

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