Question

7 which of these is an example of a positive feedback loop? a plants closing their stomata in response to water loss b the removal of salt from a saltwater fish during osmoregulation c the release of glucose by the liver in response to low blood sugar d platelets stimulating the activation of more platelets during clotting

Explanation:

Positive - feedback loops amplify a response. In blood - clotting, platelets stimulating more platelet activation is an example as it leads to an increasing response to form a clot. Options A, B, and C are negative - feedback examples that aim to maintain homeostasis by counter - acting changes.

Answer:

D. platelets stimulating the activation of more platelets during clotting