Synergism occurs when a) hormones acting simultaneously produce a larger effect than predicted. b) a hormone can exert its full effects only in the presence of another hormone.. c) one hormone triggers the secretion of a second hormone. d) one hormone inhibits the release of a second hormone.

A) hormones acting simultaneously produce a larger effect than predicted.  

Explanation:

The answer is option --

A) hormones acting simultaneously produce a larger effect than predicted.

Synergy is a term used when two or more hormones produces a larger effect than the sum of the individual hormone released. Their results are increased and amplified.

Thus Synergism occurs when :

A) hormones acting simultaneously produce a larger effect than predicted.  

answer; i believe its called ; checks   and balances;

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