Final answer:
The synergistic effect describes how two or more hormones can produce a greater response together than on their own.
Step-by-step explanation:
The term that describes when two or more hormones produce a greater response when applied together than the sum of their individual responses is called the synergistic effect. This occurs when hormones with similar effects work together to amplify their combined response. An example of this is the interaction between follicle-stimulating hormone (FSH) from the pituitary gland and estrogens from the ovaries, which are both required for the maturation of female ova (egg cells).