An example of effectors' roles in homeostatic responses is observable when an example of effectors' roles in homeostatic responses is observable when an increase in body temperature results from exercise. an increase in body temperature results from fever. a decrease in body temperature results from shock. an increase in body temperature results from involuntary shivering. the rising sun causes an increase in body temperature in a stationary animal.

➷ It would be 'an increase in body temperature results from involuntary shivering.' As you may realize, when you stand in the cold, your body starts to shiver itself. This is from an effector producing a response to try increase your body temperature.

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phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation