Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

The circulatory system of an insect ______.

  1. a. is a closed system
  2. b. includes a four-chambered heart
  3. c. circulates hemolymph
  4. d. moves blood through four separate circuits.

Summary Introduction

Concept introduction: The circulatory system is the organ system that permits blood or body fluids to circulate all over the body for distributing all the essential nutrients and gases all over the body tissues. It varies in different group of animals ranging from an open circulatory system seen in insects composed of hemolymph to a highly systematic closed system in mammalians composed of blood, blood vessels, a definite pumping station and the heart.


Reason for correct answer: All the members of the phylum arthropods possess an open circulatory system where hemolymph is seen to be flowing freely over all body cavities and it makes direct contact with the all major internal organs. This type of circulatory system is known as open. Uptake of essential nutrients and gaseous exchange in this group of organisms are made with the help of this hemolymph. The movement of hemolymph through the entire internal body tissues is maintained by a vessel passing along their dorsal side.

Option c. is given as “circulates hemolymph”. Since insects do not have a closed circulatory system, gaseous exchange and distribution of essential nutrients are done by hemolymph. Therefore, option c. is the correct answer.

Reason for incorrect answer:

Option a. is given as “is a closed system”.

Insects do not have a closed circulatory system rather they have hemolymph, a kind of body fluid that carries all the essential nutrients and exchange gas with every internal tissues...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

A properly planned diet controls calories by excluding snacks. T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

How do eating disorders affect health?

Understanding Nutrition (MindTap Course List)

How does a covalent bond form?

Biology: The Dynamic Science (MindTap Course List)

9.13 Define the term bydrocarbon.

Chemistry for Engineering Students

Is any amino acid both glucogenic and ketogenic?

Chemistry for Today: General, Organic, and Biochemistry