Biology Class 11

Biology Class 11th Chapter 20 mcqs

Locomotion and Movement Objective Questions

  1. Metacarpals are present in

(a) wrist

(b) palm

(c) digits

(d) thigh

Answer: (b) palm

  1. The elements associated with muscle contraction are

(a) Mg and Ca

(b) Mg and Cl

(c) Na and Ca

(d) Ca and K

Answer: (c) Na and Ca

  1. What happens in osteoporosis?

(a) Decrease in progesterone

(b) Increase in progesterone

(c) Decrease in estrogen

(d) Both 2 and 3

Answer: (c) Decrease in estrogen

  1. Coris cycle operates in

(a) Cartilage

(b) Muscle

(c) Liver

(d) Liver and muscle

Answer: (d) Liver and muscle

  1. One of the following is true of muscle contraction.

(a) H-zone expands

(b) I-band expands

(c) A-Band remains constant

(d) The sarcomeres expands

Answer: (c) A-Band remains constant

  1. Which cavity is formed by the fusion of coxal bones?

(a) Glenoid cavity

(b) Acetabulum

(c) Acromion

(d) Scapula

Answer: (b) Acetabulum

  1. Which is a part of pectoral girdle?

(a) Acetabulum

(b) Ilium

(c) Sternum

(d) Glenoid cavity

Answer: (d) Glenoid cavity

  1. A skeletal muscle which decreases the angle between two bones and bends a joint is

(a) Flexor

(b) Abductor

(c) Extensor

(d) Adductor

Answer: (a) Flexor

  1. Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

(a) Iris – Involuntary smooth muscle

(b) Heart wall – Involuntary unstriated muscle

(c) Biceps of upper arm – Smooth muscle fibres

(d) Abdominal wall – Smooth muscle

Answer: (a) Iris – Involuntary smooth muscle

  1. Largest bone in human body is

(a) Ulna

(b) Femur

(c) Humerus

(d) Tibia

Answer: (b) Femur

  1. Which one of the following pairs is wrong about cardiac muscles?

(a) Location – only in the heart

(b) Function – Pumping of blood

(c) Gap junctions – No

(d) Striated – Yes

Answer: (c) Gap junctions – No

  1. What is the ion necessary for muscle contraction?

(a) Cl

(b) Ca

(c) Na

(d) K

Answer: (b) Ca

  1. Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?

(a) Iris – Involuntary smooth muscle

(b) Heart wall – Involuntary unstriated muscle

(c) Biceps of upper arm – Smooth muscle fibres

(d) Abdominal wall – Smooth muscle

Answer: (a) Iris – Involuntary smooth muscle

  1. Bones formed by ossification of a tendon is called

(a) Dermal bone

(b) Sesamoid bone

(c) Membrane bone

(d) Cartilage

Answer: (b) Sesamoid bone

  1. Which joint occurs between humerus and radioulna?

(a) Ball and socket joint

(b) Sliding

(c) Pivot

(d) Hinge joint

Answer: (d) Hinge joint

  1. Hyoid is a

(a) cavity

(b) cartilage

(c) bone

(d) fluid

Answer: (c) bone

  1. ______ connect the ends of bones together.

(a) Ligaments

(b) Tendons

(c) Muscles

(d) cartilages

Answer: (a) Ligaments

  1. _______ is used to capture prey in Hydra.

(a) Cilia

(b) Flagella

(c) Tentacles

(d) Forelimbs

Answer: (c) Tentacles

  1. Ilium, ischium, and pubis join at the ______ to form coxal bone.

(a) Acetabulum

(b) Ilium

(c) Sternum

(d) Glenoid cavity

Answer: (a) Acetabulum

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