Chapter 29, Problem 22A

Summary Introduction

Introduction:

The excretory system is removes excess, unwanted substances from the body fluids of an organism, so as to support maintain internal chemical homeostasis and prevent harm to the body. The dual feature of excretory systems is the elimination of the waste products of metabolism and to drain the body of used up and break down components in a liquid and gaseous state.

Answer to Problem 22A

Correct answer:

The correct answer is option (A) excretory.

Explanation of Solution

Explanation/justification for the correct answer:

Option (A)is excretory. The excretory system includes a pair of kidneys, ureters, cloaca, and urinary bladder. The excretory system is same to that of mammals and there are two kidneys that eliminate nitrogenous products from the blood. So, the correct answer is option A.

Explanation for incorrect answer:

Option(B)is nervous. The nervous system has two parts, called the central nervous system and the peripheral nervous system because of their location in the body. The central nervous system (CNS) consists of the nerves in the brain and spinal cord. So, this is an incorrect answer.

Option (C) is digestive. The liver, pancreas, and gallbladder are the solid organs of the digestive system.So, this is an incorrect answer.

Option (D) is reproductive. The human reproductive system operates to produce human offspring, with the male producing sperm and the female producing the ovum. So, this is an incorrect answer.