Chapter 25, Problem 4A

Summary Introduction

Introduction :

Every organism on the earth is made up of cells. In the multicellular organism, the cells make up tissues, the tissues make up organ and the organs are together arranged in an organ system.

Answer to Problem 4A

Correct answer :

Option (C).

Explanation of Solution

Explanation/justification for the correct answer :

Option (C) maintains homeostasis. The flames cells are the part of the excretory and the nervous system in the flat worms and the excretory system is known to maintain homeostasis. Hence, the correct answer is option (C).

Explanation for incorrect answer :

Option (A) digestion. The given diagram is of flame cell that I part of excretory system, not digestive system. Hence, it is an incorrect answer.

Option (C) movement. The flame cells are not responsible for movement. Hence, it is an incorrect answer.

Option (D) provides support. The flame cells do not provide any structural support. Hence, it is an incorrect answer.