Consider statements about bryophytes: 1. They are called amphibians of the plant kingdom. 2. They possess vascular tissues. 3. They require water for fertilization. Which are correct? MCQ with Answer and Explanation

Explanation:
Thyroid-stimulating hormone (TSH) from the anterior pituitary binds to thyroid follicular cells, stimulating the release of T₃ and T₄.

Explanation:
The pituitary gland controls many other endocrine glands via tropic hormones (TSH, ACTH, FSH, LH). It is regulated by the hypothalamus. Thus, it is often called the master gland.

Explanation:
Graves' disease is an autoimmune condition where the immune system produces thyroid-stimulating immunoglobulins (TSIs). These autoantibodies bind to and mimic the action of Thyroid Stimulating Hormone (TSH) on the TSH receptors of the thyroid gland. This continuous, unregulated stimulation causes the thyroid to overproduce thyroid hormones (T3 and T4), leading to hyperthyroidism, goiter, and often exophthalmos (bulging eyes).