Question

Identify correct statements with respect to Thyroxine:
1. It regulates the basal metabolic rate of the body.
2. It promotes growth of the body.
3. It regulates reproductive cycles in females.
4. It decreases action of neurotransmittors- adrenaline or noradrenaline.
5. It enhances protein synthesis in growing individuals.

• A. Statement 1,2,3 and 4 are correct
• B. Statement 1,2,3 and 5 are correct
• C. All statements are correct
• D. All statements are wrong

Hint:

Thyroxine enhances, not decreases, the action of adrenaline.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
Thyroxine from the thyroid gland controls metabolism and growth.

Step 2: Check each statement
1 is true: it raises basal metabolic rate.\n2 is true: it promotes growth.\n3 is true: it helps regulate reproductive cycles.\n4 is false: it enhances action of adrenaline.\n5 is true: it increases protein synthesis in growing individuals.

Step 3: Conclusion
Statements 1, 2, 3 and 5 are correct.

Final Answer:
Statements 1, 2, 3 and 5 are correct. \[ \boxed{\text{(B) }\text{Statement 1,2,3 and 5 are correct}} \]