Question

Which of the following is an animal hormone?

• A. adrenaline
• B. cytokinin
• C. auxins
• D. gibberellin

Hint:

Remember: Adrenaline is an animal hormone that prepares the body for emergency responses, while cytokinin, auxins, and gibberellins are plant hormones.

Answer 1

The Correct Option is A

Step 1: Identifying the hormone
Adrenaline is a hormone produced by the adrenal glands in animals, particularly in response to stress, fear, or excitement. It plays a crucial role in the fight-or-flight response.

Step 2: Function of other options
- Cytokinin, auxins, and gibberellins are plant hormones that regulate various growth processes in plants.

Step 3: Conclusion
Therefore, the animal hormone in the list is adrenaline.
\[ \boxed{\text{adrenaline}} \]