This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 20 Locomotion And Movement – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 20 Locomotion And Movement Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. (1) A single U-shaped bone called hyoid is present forms the roof of the buccal cavity.(2) The vertebral column serves as the point of attachment for the ribs and musculature of the back.(3) Last 2 pairs (11th and 12th) of ribs are not connected dorsally. A) (1) and (2) are incorrect. B) (2) and (3) are incorrect. C) (1) and (3) are incorrect. D) All are incorrect. Show Answer Correct Answer: C) (1) and (3) are incorrect. 2. Lack of relaxation between successive stimuli in sustained muscle contraction is known as A) Fatigue. B) Tetanus. C) Tonus. D) Spasm. Show Answer Correct Answer: B) Tetanus. 3. Which of the following is not correct when muscle contracts?(1) Length of Actin and Myosin decreases .(2) Two Z line comes closer to each other. (3) Length of A band remains same. (4)Area of H zone remains same. A) And (3). B) And (4). C) And (3). D) And (4). Show Answer Correct Answer: B) And (4). 4. 1-Globular actin is a polymer of F-actin.2-Muscle is a specialised connective tissue . A) Both are correct. B) A is correct only. C) B is correct only. D) Both are incorrect. Show Answer Correct Answer: D) Both are incorrect. 5. Which muscle band remains unchanged during the contraction and relaxation of the skeletal muscle? A) I. B) H. C) A. D) E. Show Answer Correct Answer: C) A. 6. Aerobic muscles utilize the large amount of oxygen stored for ATP production because they have: A) Haemoglobin. B) Mitochondria. C) Myoglobin. D) Both b and c. Show Answer Correct Answer: D) Both b and c. 7. Bone disorder in adults where bones are inadequately mineralized causing soft, weak bones in an adult A) Wolff's law. B) Rickets. C) Osteoporosis. D) Osteomalacia. E) Paget's disease. Show Answer Correct Answer: D) Osteomalacia. 8. The source of Ca 2+ for the muscle is A) T-tubule. B) Sarcosome. C) Sarcolemma. D) Sarcoplasmic reticulum. Show Answer Correct Answer: D) Sarcoplasmic reticulum. 9. A-extra oxygen consumption in human body is known as oxygen debtR-the extra oxygen is required by the body to oxidize the accumulated lactic acid produced during strenuous exerecise A) A&R both true, R is correct explanation of A. B) A&R both true, but R is not correct explanation of A. C) A is true but R is false. D) Both A&R are false. Show Answer Correct Answer: A) A&R both true, R is correct explanation of A. 10. Find the correct combination of statements-(1) Locomotory structures need not be different from those affecting other types of movements(2) All movements are locomotion.(3) Cells of the human body exhibit four main types of movements.(4) About 40-50 per cent of the body weight of a human adult is contributed by muscles A) 1 and 3 both are correct. B) 2 and 4 both are correct. C) 1 and 4 both are correct. D) All are correct. Show Answer Correct Answer: C) 1 and 4 both are correct. 11. Osteoporosis, an age related disorder, occurs dur to? A) Decreased level of estrogen. B) Accumulation of uric acid leading to inflammation in joints. C) Autoimmune disorder affecting NMJ. D) High concentration of Na$^{+ }$and Ca$^{++}$. Show Answer Correct Answer: A) Decreased level of estrogen. 12. The pectoral girdle and pelvic girdle and the bones of limbs form A) Axial skeleton. B) Appendicular skeleton. C) Visceral skeleton. D) Outer skeleton. Show Answer Correct Answer: B) Appendicular skeleton. 13. Which of the following is important for muscle contraction and nerve impulse transmission: A) Mg++ ion. B) Fe2+ ion. C) Ca2+ ion. D) Ca++ ion and Mg++ ion. Show Answer Correct Answer: C) Ca2+ ion. 14. Actin binding sites are located on: A) A-troponin. B) B-tropomyosin. C) C-meromyosin. D) Both b and c. Show Answer Correct Answer: D) Both b and c. 15. Which protein constitutes the I-band? A) Myosin. B) Troponin. C) Actin. D) Meromyosin. Show Answer Correct Answer: C) Actin. 16. Which type of muscle fiber is known for its endurance? A) Striated fibers. B) White fibers. C) Smooth fibers. D) Red fibers. Show Answer Correct Answer: D) Red fibers. 17. How many bones make up the human wrist? A) 6. B) 10. C) 12. D) 8. Show Answer Correct Answer: D) 8. 18. A cricket player is fast chasing a ball in the field. Which one of the following groups of bones is directly contributing to this movement? A) Femur, malleus, tibia, metatarsals. B) Tarsals, femur, metatarsals, tibia. C) Pelvis, incus, patella, tarsals. D) Sternum, femur, tibia, fibula. Show Answer Correct Answer: B) Tarsals, femur, metatarsals, tibia. 19. Visceral muscles are located in the:- A) Alimentary canal. B) Reproductive tract. C) Muscles of the heart. D) (1) and (2). Show Answer Correct Answer: D) (1) and (2). 20. Consider the given features regarding red muscle fibres. (A) Amount of sarcoplasmic reticulum is high (B) Large number of mitochondria (C) Depend upon anaerobic process for energy (D) Contract for a longer period without fatigue. Select the option that include only incorrect features. A) A and C. B) B and D. C) C and D. D) C only. Show Answer Correct Answer: A) A and C. 21. Which term is the smallest subdivision in this group? A) Fiber. B) Fibril. C) Filament. D) Actin. Show Answer Correct Answer: D) Actin. 22. ATPase enzyme of the muscle is located on A) Troposion. B) Actin. C) Myosin. D) Actium. Show Answer Correct Answer: C) Myosin. 23. The muscle band that remains unchanged during muscle contraction and relaxation of the skeletal muscle is- A) I. B) A. C) H. D) Z-line. Show Answer Correct Answer: B) A. 24. A-there are 12 pairs of ribsR-each rib is a thin flat bone connected dorsally to vertebral column and ventrally to sternum A) A is true but R is false. B) A&R both true, R is correct explanation of A. C) A&R both true, but R is not correct explanation of A. D) Both A&R are false. Show Answer Correct Answer: B) A&R both true, R is correct explanation of A. 25. During muscular contraction, the myosin head bind to the exposed active site on actin to form: A) Cross bridge. B) Motor end plate. C) Cross arm. D) Motor Unit. Show Answer Correct Answer: A) Cross bridge. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 20 Locomotion And Movement Quiz 1Class 11 Biology Chapter 20 Locomotion And Movement Quiz 2Class 11 Biology Chapter 20 Locomotion And Movement Quiz 3Class 11 Biology Chapter 20 Locomotion And Movement Quiz 4Class 11 Biology Chapter 20 Locomotion And Movement Quiz 5Class 11 Biology Chapter 20 Locomotion And Movement Quiz 6Class 11 Biology Chapter 20 Locomotion And Movement Quiz 7Class 11 Biology Chapter 20 Locomotion And Movement Quiz 8Class 11 Biology Chapter 20 Locomotion And Movement Quiz 9Class 11 Biology Chapter 20 Locomotion And Movement Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books