The human heart has only 4 chambers. Left and right atria and left and right ventricles.
Because hormones secreted by endocrine glands regulate the activity of body cells ..the release of body hormones into the blood is controlled by a stimulus either causes an increase or a decrease in the amount of hormone secreted .
It isn’t sea anemone nor the beetle because they belong to the Animalia Kingdom so the answer would be AMOEBA and SEAWEED
Interphase, lasting 18 of the 20 hours cycle
