Question

which of the following process is example of positive feedback mechanism?
А Increasing in heart rate after exercise
B
Decrease in body temperature after taking rest
.

Decrease in hormone release after normalisation​

Answer 1

Answer:

increasing heart rate after exercise.

Answer 2

Answer:

An example of a positive feedback mechanism is-  A. Increase in heart rate after exercise.

Explanation:

• A process in which the end products of a feedback loop results in an increase in the production of that action which leads to the formation of those products is called a positive feedback mechanism.

• An increase in heart rate after exercise is an example of a positive feedback mechanism because exercise results in a signal in the brain which makes the heart beat faster in order to increase the blood (oxygen) supply in the body.
• Increased heart rate increases the blood supply, hence, an example of a positive feedback mechanism.
• While options,  B. decrease in body temperature after taking rest and C. decrease in hormone release after normalization, are examples of negative feedback mechanisms.