Explanation: The type of fertilization in which the egg is fertilized inside the body of the female is called internal fertilization. There are generally three types of internal fertilization: oviparity, ovoviparity and viviparity. In oviparity, fertilized eggs are laid outside the female's body where it develops. Eggs which are laid outside the female's body into the external environment have shells which serves as a protection to the developing embryo and to increase the chances for survival. In ovoviparity, the fertilized egg develops inside the female's body but derives nourishment from the egg yolk. In viviparity, fertilized eggs develop inside the female's body but the embryo receives nourishment from the mother through the placenta.
To maintain homeostasis in the body, the body needs to keep track of the condition within and respond to any fluctuations. Also known as the c<u>ontrol center, the integrating center</u> activates the effector when it sees that values of the internal condition of the body deviates from the normal range. When this happens, the effector will cause a response to get back within normal range.