Solving the Locomotion and Movement Multiple Choice Questions of Class 11 Biology Chapter 20 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Locomotion and Movement Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 20 Biology Class 11 and cross-check your answers during preparation.

I. Select the correct answer from the following questions:

Question 1.
Human skull is
(a) Tricondylic
(b) Acondvlic
(c) Dicondylic
(d) Monocondylic

Answer

Answer: (c) Dicondylic.

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Question 2.
Cranium of man is formed of bones
(a) 8
(b) 6
(c) 2
(d) 4

Answer

Answer: (a) 8.

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Question 3.
Face of skull is formed of bones
(a) 28
(b) 10
(c) 8
(d) 14

Answer

Answer: (d) 14.

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Question 4.
Curves in the vertebral column are
(a) 8
(b) 4
(c) 2
(d) 1

Answer

Answer: (b) 4.

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Question 5.
Which vertebra is commonly called yesbone?
(a) Thoracic
(b) Axis
(c) Atlas
(d) Typical carvical.

Answer

Answer: (c) Atlas.

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Question 6.
Axis vertebra is characterised by the presence of
(a) Transverse
(b) Odontoid process
(c) Neural spine
(d) Pre and post zygapophysis.

Answer

Answer: (b) Odontoid process.

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Question 7.
Total number of cervical vertebrae in human vertebral column are
(a) 3
(b) 12
(c) 7
(d) 5.

Answer

Answer: (c) 7.

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Question 8.
Total number of thoracic vertebrae in human vertebral column are
(a) 3
(b) 12
(c) 5
(d) 7

Answer

Answer: (b) 12.

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Question 9.
Total number of lambar vertebrae in human vertebral column are
(a) 3
(b) 12
(c) 5
(d) 7

Answer

Answer: (c) 5.

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Question 10.
Xiphoid process is the lowest part of
(a) Pectoral girdle
(b) Pelvic girdle
(c) Lumbar vertebrae
(d) Sternum.

Answer

Answer: (d) Sternum.

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Question 11.
Trochlea is a part of
(a) Pectoral girdle
(b) Pelvic girdle
(c) Femur
(d) Humerus bone.

Answer

Answer: (d) Humerus bone.

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Question 12.
Sigmoid notch is a part of
(a) Ulna bone
(b) Humerus bone
(c) Tibia bone
(d) Radius bone.

Answer

Answer: (d) Radius bone.

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Question 13.
Innominate bone is also known as
(a) Pelvic girdle
(b) Pectoral girdle
(c) Clavicle
(d) Sternum

Answer

Answer: (a) Pelvic girdle.

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Question 14.
Acetabulum is a part of
(a) Humerus bone
(b) Pelvic girdle
(c) Femur bone
(d) Pectoral girdle

Answer

Answer: (b) Pelvic girdle.

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Question 15.
The obturator foramen is a part of
(a) Skull
(b) Spinal cord
(c) Pelvic girdle
(d)Vertebral column.

Answer

Answer: (c) Pelvic girdle.

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Question 16.
Articulation of femur with pelvic girdle is an example of
(a) Pivot joint
(b) Hinge joint
(c) Gliding joint
(d) Ball and socket join.

Answer

Answer: (d) Ball and socket join.

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Question 17.
Obturator foramen occurs in
(a) Skull
(b) Pelvic girdle
(c) Vertebrae
(d) Pectoral girdle

Answer

Answer: (d) Pelvic girdle.

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Question 18.
The total number of bones in human skeleton is
(a) 305
(b) 206
(c) 205
(d) 306

Answer

Answer: (b) 206.

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Question 19.
Cervical vertebrae occur in
(a) Neck
(b) Abdomen
(c) Thorax
(d) Tail.

Answer

Answer: (a) Neck.

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Question 20.
Knee joint is
(a) Angular joint
(b) Pivot joint
(c) Hinge joint
(d) Ball and socked joint.

Answer

Answer: (c) Hinge joint.

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Question 21.
The ions that play an important role in muscle contraction are
(a) Ca⁺⁺
(b) K⁺
(c) Na⁺⁺
(d) Mg⁺⁺

Answer

Answer: (a) Ca⁺⁺

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Question 22.
Myoglobin is found in
(a) Slow muscle fibres
(b) Blood
(c) Lymph
(d) Fast muscle fibres.

Answer

Answer: (a) Slow muscle fibres

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Question 23.
Which of the following proteins is associated with the primary (thick) myofilaments:
(a) Tropomyosin
(b) Actin
(c) Tropoin
(d) Meromyosin.

Answer

Answer: (d) Meromyosin.

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Question 24.
The synovial fluid is found in
(a) Internal ear
(b) Freely movable joints
(c) Around the brain
(d) Intercellular spaces.

Answer

Answer: (b) Freely movable joints.

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Question 25.
Number of ribs in man is
(a) 16 pairs
(b) 10 pairs
(c) 14 pairs
(d) 12 pairs

Answer

Answer: (d) 12 pairs.

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II. Fill in the blanks:

Question 1.
Human beings can move ……….., …………, …………, ………… etc. Such voluntary movements are called locomotion.

Answer

Answer: limbs, jaws, eyelids, tongue

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Question 2.
Cells of the human body exhibit three main types of movements, namely, ……….., …………. and …………..

Answer

Answer: amoeboid, ciliary, muscular

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Question 3.
Based on their location, three types of muscles are identified, (i) ………… (ii) ………… and (iii) ………….

Answer

Answer: Skeletal, Visceral, Cardiac

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Question 4.
……………. are the muscles of heart. Based on appearance, cardiac muscles are ………….

Answer

Answer: Cardiac muscles, striated

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Question 5.
Muscle fibre is a …………. as the sarcoplasm contains many nuclei.

Answer

Answer: syncitium

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Question 6.
Each myofibril has alternate …………. and ………… bands on it.

Answer

Answer: dark, light

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Question 7.
The thin filaments are firmly attached to the …………..

Answer

Answer: ‘Z’ line.

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Question 8.
A complex protein …………… is distributed at regular intervals on the …………..

Answer

Answer: Troponin, tropomyosin

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Question 9.
Each meromyosin has two important parts, a …………. with a short arm and a ………….

Answer

Answer: globular head, tail

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Question 10.
Muscle contraction is initiated by a signal sent by the …………… via a motor neuron.

Answer

Answer: central nervous system (CNS)

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Question 11.
Muscle contains a red coloured oxygen storing pigment called …………….

Answer

Answer: myoglobin

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Question 12.
Skeletal system consists of a framework of bones and …………..

Answer

Answer: few cartilages

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Question 13.
Axial skeleton comprises …………. distributed along the main axis of the body.

Answer

Answer: 80 bones

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Question 14.
Each middle ear contains three tiny bones- …………., ………….. and stapes, collectively called …………..

Answer

Answer: Malleus, Incus, Ear Ossicles

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Question 15.
Our vertebral column is formed by 26 serially arranged units called ………….. and is …………. placed.

Answer

Answer: vertebrae, dorsally

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III. Mark the statements (T) True or (F) False

Question 1.
First seven pairs of ribs are called true ribs.

Answer

Answer: True.

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Question 2.
The 8th, 9th and 10th pairs of ribs do not articulate directly with the help of hyaline cartilage. These are called vertebrochondral ribs.

Answer

Answer: True.

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Question 3.
The bones of the limbs along with their girdles constitute the appendicular skeletion. Each limb is made of 30 bones.

Answer

Answer: True.

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Question 4.
The fore limb (hand) bones are humerus, radius and ulna, carpals (wrist bones-8 in number), meta carpals (palm bones – 5 in number) and phalanges (digits- 14 in number).

Answer

Answer: True.

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Question 5.
A cup shaped bone called patella cover the knee ventrally (knee cap).

Answer

Answer: True.

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Question 6.
Joints are essential for all types of movements involving the bony parts of the body.

Answer

Answer: True.

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Question 7.
Auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle. (Myasthenia gravis).

Answer

Answer: True.

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Question 8.
Arthritis : Inflammation of joints due to accumulation of uric acid crystals.

Answer

Answer: False.

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Question 9.
Tetany : Rapid spasms (wild contractions) in muscle is due to lesser Ca⁺⁺ in body fluid.

Answer

Answer: True.

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Question 10.
Human beings can move limbs, jaws, eyelids, tongue etc. Some of the movements result in a change of place or location. Such voluntary movements are called locomotion.

Answer

Answer: True.

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Question 11.
Walking, running, climbing, flying, swimming are all some forms of locomotory movements.

Answer

Answer: True.

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Question 12.
Only 10 percent of body weight of a human adult is contributed by muscles.

Answer

Answer: False.

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Question 13.
Each myosin (thick) filament is also a polymerised protein. Many monomeric proteins called meromyosins constitute one thick filament.

Answer

Answer: True.

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Question 14.
The junction between a motor neuron and the sarcolemma of the muscle fibre is called the neuromuscular junction or motor-end plate.

Answer

Answer: True.

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Question 15.
Red muscles also contain plenty of mitochondria which can utilise the large amount of oxygen stored in them for ATP production. These muscles, therefore, can also be called aerobic muscles.

Answer

Answer: True.

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IV. Match the items of column I with the items of column II

Column I	Column II
(a) Walking	1. muscles of heart
(b) Microfilaments	2. in the inner walls of hollow
(c) Passage of ova through the female reproductive tract.	3. Voluntary muscles.
(d) Striated muscles	4. fascia
(e) Cardiac muscles	5. locomotory movements.
(f) Visceral muscles	6. ciliary movement
(g) Muscle bundles or fascicles	7. a globular head with a short arm and a tail.
(h) Actin	8. amoeboid movement
(i) Myosin	9. Malleus, Incus and stapes
(j)  Meromyosin	10. A or Anisotropic band
(k) Ear ossicles	11. appendicular skeleton
(l) Thoracic	12. I band or Isotropic band
(m) Bones of the limbs	13. is a large triangular flat bone
(n) Scapula	14. Decreased levels of estrogen is a common cause.
(o) Osteoporosis	15. 12.

Answer

Answer:

Column I	Column II
(a) Walking	5. locomotory movements.
(b) Microfilaments	8. amoeboid movement
(c) Passage of ova through the female reproductive tract.	6. ciliary movement
(d) Striated muscles	3. Voluntary muscles.
(e) Cardiac muscles	1. muscles of heart
(f) Visceral muscles	2. in the inner walls of hollow
(g) Muscle bundles or fascicles	4. fascia
(h) Actin	12. I band or Isotropic band
(i) Myosin	10. A or Anisotropic band
(j)  Meromyosin	7. a globular head with a short arm and a tail.
(k) Ear ossicles	9. Malleus, Incus and stapes
(l) Thoracic	15. 12.
(m) Bones of the limbs	11. appendicular skeleton
(n) Scapula	13. is a large triangular flat bone
(o) Osteoporosis	14. Decreased levels of estrogen is a common cause.

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