Human Endocrine System Quiz - ICSE Class 8 Science

Free practice quiz: Human Endocrine System (ICSE Class 8 Science). 50 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which gland, often referred to as the 'master gland', controls the activity of many other endocrine glands?

   1. Thyroid gland
   2. Adrenal gland
   3. Pituitary gland
   4. Pancreas
   Show answer

   Answer: C. Pituitary gland

   The pituitary gland is called the 'master gland' because it secretes hormones that regulate the functions of other endocrine glands, such as the thyroid gland, adrenal glands, ovaries, and testes.

2. Which of the following is NOT a target organ for hormones secreted by the pituitary gland?

   1. Adrenal cortex
   2. Thyroid gland
   3. Pancreas
   4. Ovaries
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   Answer: C. Pancreas

   While the pituitary gland influences many endocrine glands, the pancreas's hormonal regulation (insulin and glucagon) is primarily controlled by blood glucose levels, not directly by pituitary hormones.

3. Which of the following endocrine glands is part of both the endocrine and lymphatic systems and is crucial for the development of the immune system?

   1. Thyroid gland
   2. Adrenal gland
   3. Thymus gland
   4. Pituitary gland
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   Answer: C. Thymus gland

   The thymus gland, located in the chest, is essential for the maturation of T-lymphocytes, a vital component of the adaptive immune system. It also produces hormones that regulate immune cell development.

4. A person with a significantly slowed metabolism, weight gain, and feeling cold could be suffering from an underactive thyroid gland, a condition called:

   1. Hyperthyroidism
   2. Hypothyroidism
   3. Diabetes
   4. Cushing's syndrome
   Show answer

   Answer: B. Hypothyroidism

   Hypothyroidism is a condition where the thyroid gland does not produce enough thyroid hormones, leading to a slowed metabolism and associated symptoms.

5. Which hormone, secreted by the adrenal cortex, helps the body cope with long-term stress by regulating metabolism and suppressing the immune system?

   1. Aldosterone
   2. Adrenaline
   3. Cortisol
   4. Thyroxine
   Show answer

   Answer: C. Cortisol

   Cortisol is a glucocorticoid that plays a significant role in the body's response to stress, influencing metabolism and the immune response.

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