CBSE Class 11 Biology Locomotion and Movement MCQs

Question. The sliding filament theory to explain muscular contraction was given by
(a) Corti
(b) H.E. Huxley
(c) A.F. Huxley
(d) Huxley and Huxley

Answer : D

Question. The total number of muscles in the body of man is
(a) 409
(b) 439
(c) 539
(d) 639

Answer : D

Question. Muscles of the heart are
(a) Voluntary striated
(b) Voluntary smooth
(c) Involuntary striated
(d) Involuntary smooth

Answer : C

Question. Contraction of a muscle is caused by
(a) Myosin
(b) Actin
(c) ATP
(d) Actomyosin

Answer : D

Question. The dark bands (A–bands) of a skeletal muscle are known as
(a) Isotropic bands
(b) Anisotropic bands
(c) Intercalated disc
(d) Cross bridges

Answer : B

Question. The hardest substance present in the
(a) Bone– Ossein
(b) Chitin – Protein
(c) Tooth– Enamel
(d) Muscle–Myosin

Answer : C

Question. What is correct about human body
(a) There are 5 vertebra in the neck
(b) Brain box is made up of 4 bones
(c) There are 15 pairs of ribs
(d) There are 12 thoracic vertebra

Answer : D

Question. Ciliary muscles are found in
(a) Diaphragm of a mammal
(b) Eyes of vertebrates
(c) Heart of vertebrates
(d) Stomach of frog

Answer : B

Question. Heart beat is controlled by a nodal tissue which is made up of specialised cardiac muscles, called
(a) Purkinje fibres
(b) Myonemes
(c) Collagen fibres
(d) Telodendria

Answer : A

Question. Contraction of shortest duration are present is-
(a) Heart muscle
(b) Lungs muscle
(c) Leg muscle
(d) Eyelids muscle

Answer : D

Question. Find out the incorrect statement-
(a) Muscle fibre is a syncitium as the sarcoplasm contains many nuceli.
(b) A characterstic feature of the muscle fibre is the presence of a large number of parallely arranged filaments in the sarcoplasm called myofilaments or myofibrils.
(c) Actin & myosin are rod like structures, arranged perpendicular to each other and also to the longitudnal axis of myofibrils
(d) The protein of the myofibril between 2 successive Z-line is considered as the functional unit of contraction, is called a sarcomere.

Answer : C

Question. Find out the set of correct statements
(A) Meromyosin is the monomeric protein of myosin.
(B) Each meromyosin has head as HMM and tail as LMM
(C) Increase in Ca2+ level leads to binding of Ca with a subunit of tropomyosin on actin filament
(D) ATP hydrolysis is done by myosin head to make cross bridge.
(a) A, B
(b) A, B, C
(c) B, C, D
(d) A, B, D

Answer : D

Question. The smallest bone in rabbit’s or man’s skeleton is
(a) Nasal
(b) Stapes
(c) Patella
(d) Palatine

Answer : B

Question. In man the axial skeleton is made up of
(1) 80 bones
(2) 100 bones
(3) 103 bones
(4) 106 bones

Answer : A

Question. Papillary muscles are found in
(a) Haemocoel
(b) Heart of cockroach
(c) Arm
(d) Heart of mammal

Answer : D

Question. Sarcolemma is a membrane found over in
(a) Nerve fibre
(b) Cardiac muscle
(c) Skeletal muscle fibre
(d) Heart

Answer : C

Question. When there is a drop in the force of contraction after prolonged stimulation, it is known as
(a) Muscle tone
(b) Muscle atrophy
(c) Muscle fatigue
(d) Muscle dystrophy

Answer : C

Question. During muscle contraction
(a) Chemical energy is changed into electrical energy
(b) Chemical energy is changed into mechanical energy
(c) Chemical energy is changed into physical energy
(d) Mechanical energy is changed into chemical energy

Answer : B

Question. Major protein in the thick filament of skeletal muscle fibre is
(a) Tropomysin
(b) Myosin
(c) Actin
(d) Tropnin

Answer : B

Question. Flexion of thigh, knee and their rotation is facilatated by
(a) Biceps muscle
(b) Triceps muscle
(c) Sartorius muscles
(d) Shank

Answer : C

Question. The time period between the beginning of electrical response and peak of tension recorded is
(a) Contraction time
(b) Latent period
(c) Refractory period
(d) Relaxation time

Answer : A

Question. The special contractile protein actin is found in
(a) Thick filaments of A–bands
(b) Thin filaments of I–bands
(c) Both thick and thin bands
(d) Whole of myofibril

Answer : B

Question. The number of vertebrae in rabbit is
(a) 40
(b) 33
(c) 44
(d) 46

Answer : D

Question. The number of floating ribs in human body is
(a) 6 pairs
(b) 3 pairs
(c) 5 pairs
(d) 2 pairs

Answer : D

Question. Sternum of mammal consists of
(a) A xiphisternum and a xiphoid cartilage
(b) 4 sternebrae, a xiphisternum and a xiphoid
(c) 6 sternebrae, a xiphisternum and a xiphoid
(d) 6 sternebrae and a xiphoid cartilage

Answer : C

Question. Lumber vertebra are found in
(a) Neck region
(b) Abdominal region
(c) Hip rigion
(d) Thorax

Answer : B

Question. Which one is odd pair
(a) Femur-Humerus
(b) Tibia-Radius
(c) Axis-Atlas
(d) Tarsal-Carpals

Answer : C

Question. During muscular contraction, the
(a) I–zone will decrease in length
(b) A–zone will decrease in length
(c) Z–zone will decrease in length
(d) H–zone will decrease in length

Answer : A

Question. The contraction of muscle of shortest duration is seen in
(a) Heart
(b) Jaws
(c) Intestine
(d) Eyelids

Answer : D

Question. Name the connective tissue sheath which surrounds the muscle bundles
(a) Epimysium
(b) Endomysium
(c) Perimysium
(d) Sarcomere

Answer : A

Question. What is sprain
(a) More pulling of tendon
(b) Less pulling of tendon
(c) More pulling of ligament
(d) Less pulling of ligament

Answer : C

Question. The last two pairs of ribs are named floating ribs because
(1) Their sternal parts are attached to the sternum directly
(2) Their sternal parts are attached on the 7th pair of ribs
(3) Their sternal parts remain free and do not even reach the sternum
(4) They float in the body cavity

Answer : C

Question. Elastic cartilage is found in
(a) The trachea
(b) The auditory tube
(c) The intervertebral disc
(d) None of these

Answer : B

Question. Action potential in a muscle fibre is
(a) – 90 mV
(b) – 80 mV
(c) 45–50 mV
(d) 90–mV

Answer : C

Question. The term refractory period with reference of muscle tissue refers to
(a) A period when stimulation does not lead to contraction
(b) A period when maximum contraction occurs
(c) Time gap between application of stimulus and occurrence of contraction
(d) Loss of transluscency in muscle fibres due to death of animal

Answer : A

Question. The muscular contraction in which the tension remains the same and the mechanical work is also done is called
(a) Isotonic contraction
(b) Tetanus
(c) Isomeric contraction
(d) Single muscle twitch

Answer : A

Question. Striated muscles contract by -
(a) Sliding of actin filament upon myosin filaments
(b) Sliding of myosin filaments upon actin filaments
(c) Pulling together of myosin filaments
(d) Pulling together of actin filaments

Answer : A

Question. The distance or length of the myofibril between two adjacent Z–bands is called
(a) Sarcomere
(b) Sarcolemma
(c) Fibril
(d) Sarcoplasm

Answer : A

Question. Muscles are red because of the presence of
(a) Myoglobin and mitochondria
(b) Haemoglobin and golgi bodies
(c) Globulin and mitochondria
(d) Protein and lysosome

Answer : A

Question. The functional unit of the contractile system in the striped muscle is
(a) Z–band
(b) A–band
(c) Myofibril
(d) Sarcomere

Answer : D

Question. In a relaxed fibril, H–zone, a lighter region of low density can be seen in the centre of
(a) Anisotropic or A–band
(b) Isotropic or I–band
(c) Z–band
(d) Both in A and I–band

Answer : A

Question. The dark bands in a myofibril are due to overlapping of
(a) Only thick bands
(b) Only thin bands
(c) Both thick and thin bands
(d) None of the above

Answer : C

Question. A ...... muscle rotates the forearm to turn the palm downwards
(a) Pronator
(b) Supinator
(c) Adductor
(d) Abductor

Answer : A

Question. Which one of the following takes place in a myofibril when skeletal muscle contract Light band Dark band H–zone
(a) Shortens Shortens Shortens
(b) Shortens Unchanged Unchanged
(c) Shortens Unchanged Disappears
(d) Unchanged Shortens Shortens

Answer : C

Question. When we lift a heavy object
(a) Triceps contracts and biceps relaxes
(b) Biceps contracts and triceps relaxes
(c) Both biceps and triceps contracts
(d) Both biceps and triceps relax

Answer : B

Question. An all out sprint can not continue for more than 40 seconds because
(a) Run out of oxygen
(b) Accumulation of creatine
(c) Muscles collapse
(d) All of these

Answer : D

Question. Ions that must be present for binding the cross bridges is
(a) Na+
(b) Ca++
(c) K+
(d) None of these

Answer : B

Question. Tetanus is sustained contraction of muscle, is due to-
(a) Parathyroid deficiency
(b) Ca2+ deficiency
(c) Bacterial disease
(d) Auto immune disease

Answer : C

Question. Time period present between two sucessive contraction-
(a) Refractory period
(b) Total period
(c) Break period
(d) Lag period

Answer : A

Question. The bony sockets of the jaws in which the teeth are implanted, are known as
(a) Alveolus
(b) Fossae
(c) Dentaries
(d) Thecae

Answer : A

Question. In the case of most of the mammals including man and Giraffe, the number of cervical vertebrae are
(a) 8
(b) 7
(c) 9
(d) 10

Answer : B

Question. Cervical vertebrae are located in
(1) Thoracic region
(2) Abdominal region
(3) Neck region
(4) Lumbar region

Answer : C

Question. The number of lumbar vertebrae in human vertebral column is
(a) 12
(b) 7
(c) 5
(d) 2

Answer : C

Question. Coccygeal bone is formed by the fusion of ......... bones in man
(a) 3 vertebrae
(b) 6 vertebrae
(c) 5 vertebrae
(d) 4 vertebrae

Answer : D

Question. Inter-vertebral disc is a
(a) Fibro cartilage between the centrum of vertebrae
(b) Pad in the centrum of bone
(c) Cartilage bone in the body
(d) Body of vertebrae

Answer : A

Question. Axial skeleton is made up of
(a) Skull only
(b) Sternum only
(c) Complete vertebral column
(d) All of the above

Answer : D

Question. What is the right sequence of bones in the ear ossicles of a mammal starting from the tympanum inwards
(a) Malleus, Incus, Stapes
(b) Malleus, Stapes, Incus
(c) Incus, Malleus, Stapes
(d) Stapes, Incus, Malleus

Answer : A

Question. How many ribs are present in human beings
(a) 6 pairs
(b) 9 pairs
(c) 12 pairs
(d) 15 pairs

Answer : C

Question. Find out the correct option regarding true sentence/s from the followings-
(i) Human skull is dicondylic like reptiles.
(ii) Foramen of Magnum is found at the anterior side of skull
(iii) Atlas vertebrae helps in rotation of neck.
(iv) Spinal cord passes to the brain through Foramen of Magnum.
(a) only iv
(b) i, ii, iv
(c) i, iii, iv
(d) all are correct

Answer : A

Question. Largest foramen of human body is -
(a) Foramen of Monro
(b) Foremen ovalis
(c) Foramen of Magnedie
(d) Foramen of Magnum
Answer : D

Question. Vertebrochondral ribs are –
(a) 11^th & 12^th pair ribs
(b) 8^th, 9^th & 10th pair ribs
(c) 1^st – 7^th pair ribs
(d) 8^th–12^th pair ribs

Answer : B

Question. A shallow depression in the scapula which receives the head of the upper arm bone is known as the
(a) Acetabulum
(b) Neural arch
(c) Glenoid cavity
(d) None of these

Answer : C

Question. The protein present in the bones is known as
(a) Chondrin
(b) Ossein
(c) Sclero protein
(d) Globulin

Answer : B

Question. The bone of mammals contains Haversian canals which are connected by transverse canals known as
(a) Bidder’s canal
(b) Inguinal canal
(c) Volkmann’s canal
(d) Semicircular canal

Answer : C

Question. The cup-shaped cavity for the articulation of the head of the femur is called
(a) Glenoid cavity
(b) Acetabulum
(c) Obturator
(d) Sigmoid notch

Answer : B

Question. Haversian system is found in
(a) Atlas of man
(b) Ilium of man
(c) Femur of man
(d) Lumbar of man

Answer : C

Question. Cartilage is formed by
(a) Osteoblasts
(b) Chondriocytes
(c) Fibroblasts
(d) Epithelium

Answer : B

Question. The total number of ear bones in man is
(a) 3
(b) 6
(c) 4
(d) 2

Answer : B

Question. The pectoral and pelvic girdles and the bones of limb form
(a) Axial skeleton
(b) Appendicular skeleton
(c) Visceral skeleton
(d) Outer skeleton

Answer : D

Question. Number of bones in human body is
(a) 260
(b) 206
(c) 306
(d) 203

Answer : B

Question. An acromian process is characterisically found in rabbit/mammals in
(a) Pelvic girdle
(b) Pectoral girdle
(c) Skull
(d) Sternum

Answer : B

Question. Which pair does not have corresponding bone
(a) Humerus and femur
(b) Pectoral and pelvic girdle
(c) Atlas and coccyx
(d) Carpals and tarsals

Answer : C

Question. Ends of long bones are covered with
(a) Cartilage
(b) Muscles
(c) Ligaments
(d) Blood cells

Answer : A

Question. Which part of mammalian body has a single pair of bones
(a) External ear
(b) Lower jaw
(c) Pelvic girdle
(d) Wrist

Answer : C

Question. Pelvic girdle of rabbit consist of
(a) Ilium, ischium & pubis
(b) Ilium, ishcium & coracoid
(c) Coracoid, scapula & clavicle
(d) Ilium, coracoid & scapula

Answer : A

Question. The central shaft of a long bone is known as
(a) Diaphysis
(b) Epiphysis
(c) Hypapophysis
(d) Zygapophysis

Answer : A

Question. In children the bones are more flexible and brittle because their bones have
(a) Large quantity of salts and little organic substances
(b) Large quantity of organic substances and little salts
(c) Well developed Haversian system
(d) Large number of osteoblasts

Answer : B

Question. Rotation of thigh on lateral sides is facilitated by
(a) Gluteus medius
(b) Gluteus minimus
(c) Iliacus
(d) Obturator externus

Answer : D

Question. Bones act as reservoir of which mineral salts
(a) Sodium and magnesium
(b) Calcium and sodium
(c) Calcium and magnesium
(d) Copper and iron

Answer : C

Question. The pelvic girdles of females are ...... than those of males
(a) Narrower
(b) Broader
(c) Stoughter
(d) (a) and (b) both

Answer : B

Question. Old people are, more liable to fracture of their bones because
(a) Bones become soft and elastic
(b) Bones become hard and brittle
(c) Bones contain large quantity of organic matter
(d) None of the above

Answer : B

Question. The function of skeleton in vertebrates is/are
(a) Support
(b) Hearing
(c) Sound production
(d) All the above

Answer : A

Question. Patella is associated with
(a) Elbow
(b) Knee
(c) Neck
(d) Wrist

Answer : B

Question. Which one of the cartilage helps in early birth of a child, without damage to the pelvic girdle
(a) Hyaline cartilage
(b) Elastic cartilage
(c) Calcified cartilage
(d) Fibrous cartilage

Answer : D

Question. Red bone marrow is present in
(a) Tips of long bones
(b) Tips of short bones
(c) Bones of skull
(d) Shaft of long bones

Answer : A

Question. Total number of bones in the hind limb of a man is
(a) 14
(b) 21
(c) 24
(d) 30

Answer : D

Question. Which of the following is an example of appendicular skeleton
(a) Bones of skull
(b) Bones of vertebal column
(c) Ribs
(d) Bones of fore and hind limbs

Answer : D

Question. Appendicular skeleton is
(a) Girdles and limbs
(b) Vertebrae
(c) Rib and sternum
(d) Skull

Answer : A

Question. The vertebral column is connected to the pelvic girdle in the
(a) Coccygeal region
(b) Sacral region
(c) Lumbar region
(d) Cervical region

Answer : B

Question. Obturator foramen is present between-
(a) Ilium & Ischium
(b) Ilium & pubis
(c) Ischium & pubis
(d) None of these

Answer : C

Question. Synovial membrane is found in
(a) Neuromotor junction
(b) Synaptic junction
(c) Joints
(d) All the nerves

Answer : C

Question. Joints are lubricated by
(a) Epidermis
(b) Dermis
(c) Tympanic membrane
(d) Synovial fluid

Answer : D

Question. Ball and socket joints can be seen in
(a) Wrist
(b) Fingers
(c) Neck
(d) Shoulders

Answer : D

Question. Bone joints are made up of
(a) Cardiac muscles
(b) Elastin fibres
(c) Skeletal muscle fibres
(d) Collagen fibres

Answer : C

Question. When the head of humerus fits into glenoid cavity, joint is
(a) Ball and socket joint
(b) Hinge joint
(c) Pivot joint
(d) Saddle joint

Answer : A

Question. Joint of wrist is of
(a) Hinge type
(b) Ball and socket type
(c) Pivot type
(d) None of these

Answer : D

Question. When joint becomes inflamed and painful, condition is called
(a) Rheumatism
(b) Sprain
(c) Osteoarthritis
(d) Gouty arthritis

Answer : C

Question. Joint between femur and pelvic girdle is
(a) Pivotal
(b) Ball and socket
(c) Hinge
(d) Saddle

Answer : B

Question. Joint between femur and acetabulum is known as
(a) Hinge joint
(b) Saddle joint
(c) Gliding joint
(d) Ball and socket joint

Answer : D

Question. Joint between femur and tibio–fibula is
(a) Hinge joint
(b) Saddle joint
(c) Pivot joint
(d) Imperfect joint

Answer : A

Question. Ball and socket joint is found between
(a) Ribs and vertebral
(b) Femur and tibio-fibula
(c) Humerus and olecranon fossa
(d) Humerus and pectoral girdle

Answer : D

Question. Tendon is a structure which connects
(a) A bone with another bone
(b) A nerve with a muscle
(c) A muscle with a bone
(d) A muscle with a muscle

Answer : C

Question. Synovial joints is
(a) Pivot joint
(b) Hinge joint
(c) Ball and socket joint
(d) All of these

Answer : D

Question. ........acts as a shock absorber to cushion when tibia and femur came together
(a) Ligament
(b) Cartilage
(c) Tendon
(d) Disc

Answer : C

Question. Which of the following lubricates ligament and tendons and is an important constituent of synovial fluid of bones
(a) Pectins
(b) Lipids
(c) Hyaluronidase
(d) Hyaluronic acid

Answer : D