MCQs on Locomotion and Movement – CBSE Class 11 Biology
MCQs on Locomotion and Movement – CBSE Class 11 Biology (Unit V | NCERT-Based)
CBSE Class 11 Biology – MCQs with Answers and Explanations
Unit V: Human Physiology
Topic: Locomotion and Movement
Section A: Types of Movement & Skeletal System (Q1–Q10)
Q1. Movement shown by living organisms refers to:
A. Change in position of whole body only
B. Change in shape and position of body or its parts
C. Growth of body parts
D. Reflex action only
Answer: B
Explanation: Movement includes change in position of body parts as well as whole-body displacement.
Q2. Locomotion is defined as:
A. Movement of cell organelles
B. Movement of body parts
C. Movement of whole body from one place to another
D. Growth-related movement
Answer: C
Explanation: Locomotion results in change of place of the entire organism.
Q3. Which of the following is NOT a type of movement in humans?
A. Amoeboid movement
B. Muscular movement
C. Ciliary movement
D. Flagellar movement
Answer: D
Explanation: Humans do not show flagellar movement.
Q4. Amoeboid movement is shown by:
A. RBCs
B. Neutrophils and macrophages
C. Platelets
D. Neurons
Answer: B
Explanation: WBCs move by forming pseudopodia.
Q5. Ciliary movement helps in:
A. Blood circulation
B. Digestion
C. Movement of ova in oviduct
D. Muscle contraction
Answer: C
Explanation: Cilia move ovum and mucus in reproductive and respiratory tracts.
Q6. Total number of bones in adult human body is:
A. 200
B. 206
C. 210
D. 212
Answer: B
Explanation: Adult human skeleton consists of 206 bones.
Q7. Axial skeleton includes:
A. Limbs only
B. Shoulder and pelvic girdle
C. Skull, vertebral column, ribs, sternum
D. Hands and feet
Answer: C
Explanation: Axial skeleton forms the central framework.
Q8. Appendicular skeleton consists of:
A. Skull
B. Vertebral column
C. Limbs and girdles
D. Ribs
Answer: C
Explanation: Appendicular skeleton aids in locomotion.
Q9. Which bone is NOT a part of skull?
A. Frontal
B. Parietal
C. Maxilla
D. Femur
Answer: D
Explanation: Femur is a thigh bone, not part of skull.
Q10. The longest bone in human body is:
A. Tibia
B. Humerus
C. Femur
D. Radius
Answer: C
Explanation: Femur supports body weight and enables movement.
Section B: Joints & Skeletal Disorders (Q11–Q20)
Q11. Joint is the point where:
A. Muscles meet
B. Two or more bones articulate
C. Tendons attach
D. Ligaments break
Answer: B
Explanation: Joints allow movement between bones.
Q12. Which joint allows movement in all directions?
A. Hinge joint
B. Pivot joint
C. Ball and socket joint
D. Gliding joint
Answer: C
Explanation: Ball and socket joints (hip, shoulder) allow multiaxial movement.
Q13. Knee joint is an example of:
A. Pivot joint
B. Hinge joint
C. Saddle joint
D. Gliding joint
Answer: B
Explanation: Knee allows movement in one plane like a hinge.
Q14. Joint between atlas and axis vertebra is:
A. Hinge joint
B. Ball and socket joint
C. Pivot joint
D. Saddle joint
Answer: C
Explanation: Pivot joint allows rotation of head.
Q15. Fibrous joints are found in:
A. Knee
B. Hip
C. Skull sutures
D. Shoulder
Answer: C
Explanation: Fibrous joints provide rigidity.
Q16. Cartilaginous joints permit:
A. No movement
B. Free movement
C. Limited movement
D. Circular movement
Answer: C
Explanation: Slight movement occurs in cartilaginous joints.
Q17. Ligaments connect:
A. Muscle to bone
B. Bone to bone
C. Muscle to muscle
D. Bone to cartilage
Answer: B
Explanation: Ligaments provide joint stability.
Q18. Tendons connect:
A. Bone to bone
B. Muscle to bone
C. Muscle to muscle
D. Bone to cartilage
Answer: B
Explanation: Tendons transmit muscle force to bones.
Q19. Osteoporosis is characterized by:
A. Excess bone formation
B. Reduced bone density
C. Joint inflammation
D. Muscle wasting
Answer: B
Explanation: Loss of calcium makes bones fragile.
Q20. Arthritis affects mainly:
A. Muscles
B. Bones
C. Joints
D. Ligaments
Answer: C
Explanation: Arthritis causes joint inflammation and pain.
Section C: Muscles – Structure & Contraction (Q21–Q35)
Q21. Which type of muscle is voluntary?
A. Cardiac
B. Smooth
C. Skeletal
D. Visceral
Answer: C
Explanation: Skeletal muscles are under conscious control.
Q22. Skeletal muscles are attached to bones by:
A. Ligaments
B. Cartilage
C. Tendons
D. Fascia
Answer: C
Explanation: Tendons anchor muscles to bones.
Q23. Structural unit of muscle fiber is:
A. Sarcolemma
B. Sarcoplasm
C. Myofibril
D. Sarcomere
Answer: D
Explanation: Sarcomere is the functional contractile unit.
Q24. The contractile proteins in muscle are:
A. Actin and myosin
B. Actin and troponin
C. Myosin and tropomyosin
D. Troponin and tubulin
Answer: A
Explanation: Interaction of actin and myosin causes contraction.
Q25. Dark band in sarcomere is called:
A. I band
B. Z line
C. H zone
D. A band
Answer: D
Explanation: A band contains myosin filaments.
Q26. Light band of sarcomere is:
A. A band
B. H zone
C. I band
D. M line
Answer: C
Explanation: I band contains thin actin filaments.
Q27. Z lines represent:
A. Middle of sarcomere
B. End of sarcomere
C. Thick filament region
D. Overlapping region
Answer: B
Explanation: Z lines mark boundaries of sarcomere.
Q28. During muscle contraction, I band:
A. Increases
B. Decreases
C. Remains unchanged
D. Disappears
Answer: B
Explanation: I band shortens during contraction.
Q29. Sliding filament theory was proposed by:
A. Watson and Crick
B. Huxley and Hanson
C. Darwin
D. Hodgkin and Huxley
Answer: B
Explanation: They explained muscle contraction mechanism.
Q30. ATP is required in muscle contraction for:
A. Binding actin and myosin
B. Breaking actomyosin complex
C. Sliding of filaments only
D. Calcium release
Answer: B
Explanation: ATP helps in detachment of myosin head.
Q31. Calcium ions for muscle contraction are released from:
A. Sarcolemma
B. Mitochondria
C. Sarcoplasmic reticulum
D. T tubules
Answer: C
Explanation: SR stores and releases Ca²⁺ ions.
Q32. Troponin is associated with:
A. Thick filament
B. Thin filament
C. Z line
D. M line
Answer: B
Explanation: Troponin regulates actin–myosin interaction.
Q33. Relaxation of muscle occurs when:
A. Ca²⁺ concentration increases
B. ATP is absent
C. Ca²⁺ is pumped back into SR
D. Actin binds myosin strongly
Answer: C
Explanation: Removal of Ca²⁺ causes muscle relaxation.
Q34. Muscle fatigue occurs due to accumulation of:
A. Oxygen
B. Glucose
C. Lactic acid
D. Carbon dioxide
Answer: C
Explanation: Lactic acid lowers muscle pH, causing fatigue.
Q35. Cardiac muscles differ from skeletal muscles because they are:
A. Voluntary
B. Multinucleated
C. Striated and involuntary
D. Non-striated
Answer: C
Explanation: Cardiac muscles are involuntary but striated.
Section D: Disorders & Coordination (Q36–Q50)
Q36. Myasthenia gravis affects:
A. Bones
B. Joints
C. Neuromuscular junction
D. Tendons
Answer: C
Explanation: Autoimmune disorder affecting acetylcholine receptors.
Q37. Tetany is caused due to deficiency of:
A. Sodium
B. Potassium
C. Calcium
D. Iron
Answer: C
Explanation: Low Ca²⁺ causes involuntary muscle contraction.
Q38. Muscular dystrophy is a:
A. Bone disorder
B. Joint disease
C. Genetic muscle disorder
D. Nerve disorder
Answer: C
Explanation: It leads to progressive muscle degeneration.
Q39. Which vitamin is essential for normal bone formation?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer: D
Explanation: Vitamin D helps in calcium absorption.
Q40. Rickets occurs due to deficiency of:
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Answer: C
Explanation: Rickets causes soft and deformed bones.
Q41. Which mineral is essential for muscle contraction?
A. Iron
B. Calcium
C. Iodine
D. Zinc
Answer: B
Explanation: Calcium triggers actin–myosin interaction.
Q42. Which muscle helps in breathing?
A. Biceps
B. Triceps
C. Diaphragm
D. Deltoid
Answer: C
Explanation: Diaphragm plays key role in respiration.
Q43. Smooth muscles are found in:
A. Limbs
B. Heart
C. Alimentary canal
D. Tongue
Answer: C
Explanation: Smooth muscles control involuntary movements.
Q44. The point where motor neuron meets muscle fiber is called:
A. Synapse
B. Neuromuscular junction
C. Dendrite
D. Axon hillock
Answer: B
Explanation: NMJ transmits nerve impulse to muscle.
Q45. Neurotransmitter released at NMJ is:
A. Dopamine
B. Adrenaline
C. Acetylcholine
D. Noradrenaline
Answer: C
Explanation: Acetylcholine initiates muscle contraction.
Q46. Which structure anchors muscle fibers to bone?
A. Ligament
B. Cartilage
C. Tendon
D. Periosteum
Answer: C
Explanation: Tendons transmit muscle force.
Q47. Walking involves:
A. Single muscle contraction
B. Only leg muscles
C. Coordinated muscle action
D. Reflex movement only
Answer: C
Explanation: Locomotion requires coordination of multiple muscles.
Q48. Which system works along with muscular system for movement?
A. Digestive system
B. Respiratory system
C. Skeletal system
D. Excretory system
Answer: C
Explanation: Muscles act on bones to produce movement.
Q49. Muscle tone refers to:
A. Muscle fatigue
B. Muscle contraction
C. Continuous partial contraction
D. Complete relaxation
Answer: C
Explanation: Muscle tone maintains posture and balance.
Q50. Locomotion and movement are essential because they:
A. Produce energy
B. Aid digestion
C. Help in survival and adaptation
D. Control hormones
Answer: C
Explanation: Movement helps in feeding, protection, and survival.