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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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An endoskeleton consists of _________.

  1. a. a fluid in an internal space
  2. b. hardened plat at the surface of a body
  3. c. internal hard parts
  4. d. a fluid that surrounds the body

Summary Introduction

Introduction: A skeletal system is essential for the body support and to protect the internal organs of the body. Our body movements are brought about by the muscles by its interaction with the skeleton. The skeletal system is mainly classified into three- hydrostatic skeleton, endoskeleton and exoskeleton.

Explanation

Reason for the correct answer:

One of the main types of skeleton is the endoskeleton. Endoskeleton is a structural support found internally within an animal’s body. In humans, the endoskeleton is made up of framework of cartilages and bones. Another example- the sea stars are the echinoderms that contain the endoskeleton which is made up of hard, calcium-rich plates.

Option c. is given as “internal hard parts”.

An internal structural support found inside an animal made up of hard and tough mineralized tissue is termed as endoskeleton. Tissues present in the endoskeletons facilitate the movement by attaching to the muscles.

Hence, the correct answer is option c.

Reasons for the incorrect answers:

Option a. is given as “a fluid in an internal space”.

A fluid-filled internal space that obtains the energy for the contraction of muscles is known as hydrostatic skeleton...

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