Chapter Exam

Chapter 17: Locomotion and Movement — Online MCQ Test

Q: Which of the following is the main function of the human skeletal system?

Answer: B. Support and protection of the body — The skeletal system gives shape, support, and protection to the body. It also helps in movement by providing attachment to muscles.

Q: Which of the following is a type of movable joint?

Answer: B. Hinge joint — Hinge joints allow movement in one plane, such as at the elbow and knee. Sutures and fibrous joints are immovable or only slightly movable.

Q: Which of the following joints allows movement in all directions?

Answer: C. Ball and socket joint — Ball and socket joints allow movement in all directions, such as the shoulder and hip joints. Hinge joints allow movement mainly in one plane.

Q: If the actin filaments slide inward during contraction, which of the following remains unchanged?

Answer: A. Length of the A band — The A band corresponds to the length of thick filaments and remains constant during contraction. The H zone and sarcomere length decrease.

BIOLOGY · Grade 11 · CBSE(NCERT)

Practice Chapter 17: Locomotion and Movement with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 11 BIOLOGY. This chapter covers: Skeletal System Muscles Joints Locomotion Movement Skeletal Muscle Bone Cartilage Tendons Ligaments. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 17: Locomotion and Movement — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 11 BIOLOGY — Chapter 17: Locomotion and Movement, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is the main function of the human skeletal system?

A. Digestion of food
B. Support and protection of the body ✓
C. Production of hormones
D. Transport of oxygen

Answer: B. Support and protection of the body
The skeletal system gives shape, support, and protection to the body. It also helps in movement by providing attachment to muscles.

Which of the following is a type of movable joint?

A. Suture
B. Hinge joint ✓
C. Fibrous joint
D. Syndesmosis

Answer: B. Hinge joint
Hinge joints allow movement in one plane, such as at the elbow and knee. Sutures and fibrous joints are immovable or only slightly movable.

Which of the following joints allows movement in all directions?

A. Pivot joint
B. Hinge joint
C. Ball and socket joint ✓
D. Saddle joint

Answer: C. Ball and socket joint
Ball and socket joints allow movement in all directions, such as the shoulder and hip joints. Hinge joints allow movement mainly in one plane.

If the actin filaments slide inward during contraction, which of the following remains unchanged?

A. Length of the A band ✓
B. Length of the H zone
C. Distance between Z lines
D. Length of the sarcomere

Answer: A. Length of the A band
The A band corresponds to the length of thick filaments and remains constant during contraction. The H zone and sarcomere length decrease.

Which of the following is the most accurate description of the sliding filament theory?

A. Actin and myosin filaments shorten during contraction
B. The Z lines move farther apart during contraction
C. Actin filaments slide over myosin filaments without shortening themselves ✓
D. Myosin filaments disappear during contraction

Answer: C. Actin filaments slide over myosin filaments without shortening themselves
According to the sliding filament theory, actin slides over myosin, causing the sarcomere to shorten. The filaments themselves do not shorten.

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