Selina Solutions for Class 9 Biology Chapter 12 - Skeleton - Movement and Locomotion

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Selina Solutions for class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion

ICSE Class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion chapter is classified under Unit – V – Human anatomy and physiology. Human anatomy deals with the study of the different structure of the human body while human physiology deals with the functions of the different parts of the body.

Both the fields of study are so closely associated that it is often difficult to differentiate and study them separately.

Human physiology is referred to the mechanical, physical and biochemical functionalities of humans which inter-links medicine, health and science so as to depict the acquaintance of the body to various physical phenomena, diseases and other external factors influencing the body.

This chapter takes the students through the skeletal system of the human body, the importance of the skeleton system, its various constituents, the ultrastructure of different parts such as bones, joints, muscles and so on.

The different types of questions that are covered in this chapter are:

  • Multiple-choice questions
  • Fill in the blanks
  • State whether true/false
  • Short answer type questions
  • Long answer type questions
  • Match items in Column I & II

List of subtopics covered in Chapter 12 – Skeleton – Movement and Locomotion

Number

Subtopic

12.1

Functions of Human Skeleton

12.2

Bone

12.3

The Human Skeleton

12.3.1

Axial Skeleton

12.3.2

Appendicular Skeleton

12.4

Joints

12.5

Muscles

12.6

Lever Mechanisms

List of Exercise

Name of the exercise

Number of questions

Question Type

Page number

Progress Check

4

short

118,123,125

Review questions

4

MCQ

125,126

7

short

126

5

long

126

Selina Solutions for class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion

The chapter draws the attention of students towards the fundamentals of the skeletal system of the human body. The skeletal system provides the body with a definite shape and framework thereby protecting the delicate organs of the body.

Students get enlightened about various constituents of the skeleton system, the axial skeleton and the appendicular skeleton, girdles, joints – different types of joints, muscles – different kinds of muscles. It also enlightens students about the level mechanisms.

Antagonistic muscles, examples of this muscle, working mechanism, coordination of muscles – mechanism of flexion and extension of the elbow joint etc are also explained in the chapter.

Key Features of Selina Solutions for class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion

  • Selina solution is a one-stop-shop for all the textbook questions
  • It is a completely reliable and extremely resourceful guide for students
  • Terminologies and concepts are elucidated with utmost ease and with the use of the simplest language possible
  • Solutions are conveyed to the point and expressed in complying with the information provided in the textbook
  • Use of diagrams to explain concepts
  • Answers are tabulated to remember easily and understand at a glimpse