Chapter 11: Chemical Coordination and Integration — Online MCQ Test
ZOOLOGY · CLASS 11th · Tamil Nadu State Board
Practice Chapter 11: Chemical Coordination and Integration with a free chapter-wise online MCQ test.
This chapter covers: This chapter details human endocrine glands hormone types mechanisms of hormone action and metabolic regulation. Students study pituitary thyroid adrenal pancreas function and endo....
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 11: Chemical Coordination and Integration — Important Questions & Answers
Which gland is called the 'master gland' of the human endocrine system?
- A. Thyroid gland
- B. Pituitary gland
- C. Adrenal gland
- D. Pancreas
Answer: B. Pituitary gland
The pituitary gland controls the activity of several other endocrine glands by secreting tropic hormones.
The pituitary gland controls the activity of several other endocrine glands by secreting tropic hormones.
Which hormone lowers blood glucose level?
- A. Glucagon
- B. Adrenaline
- C. Insulin
- D. Thyroxine
Answer: C. Insulin
Insulin promotes the uptake of glucose by cells and helps convert excess glucose into glycogen.
Insulin promotes the uptake of glucose by cells and helps convert excess glucose into glycogen.
A student feels increased heartbeat, rapid breathing, and raised blood pressure during a sudden exam alert. Which hormone is most likely responsible?
- A. Insulin
- B. Adrenaline
- C. Prolactin
- D. Oxytocin
Answer: B. Adrenaline
Adrenaline prepares the body for emergency or stress situations by increasing heart rate, breathing rate, and blood pressure.
Adrenaline prepares the body for emergency or stress situations by increasing heart rate, breathing rate, and blood pressure.
Which hormone is secreted by the posterior pituitary gland?
- A. TSH
- B. Growth hormone
- C. Oxytocin
- D. ACTH
Answer: C. Oxytocin
Oxytocin is released from the posterior pituitary and is involved in uterine contraction and milk ejection.
Oxytocin is released from the posterior pituitary and is involved in uterine contraction and milk ejection.
Which of the following is the correct pair of disorder and hormone involved?
- A. Cretinism — Hypersecretion of thyroxine
- B. Diabetes insipidus — Deficiency of ADH
- C. Tetany — Excess insulin secretion
- D. Acromegaly — Deficiency of growth hormone in adults
Answer: B. Diabetes insipidus — Deficiency of ADH
Diabetes insipidus is caused by deficiency of ADH, leading to excessive water loss through urine.
Diabetes insipidus is caused by deficiency of ADH, leading to excessive water loss through urine.