Let Us Practice A. Choose the correct option Which of the following is not an excretory organ? Answer: (c) small intestine (The small intestine absorbs digested food; the large intestine eliminates solid waste, and lungs, kidneys, and skin excrete metabolic wastes) . Which one of the following is a correctly matched pair? Answer: (d) Renal artery - carries blood with waste from heart to the kidneys A kidney is divided into three parts and they are: Answer: (a) cortex, medulla and pelvis It is the state of steady internal conditions maintained by a living organism: Answer: (b) homeostasis Observe the picture and label its parts: (Looking at the labels on the diagram: I points to the outer layer cortex , II points to the inner medulla , III points to the cap-like adrenal gland , and IV points to the funnel-shaped pelvis ) Answer: (a) I – cortex, II...