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Locomotion and Movement NEET Questions and Answer

Update on: 22 Dec 2022, 01:30 PM

Many important questions are formed in competitive exams like NEET and boards from Class 11 Biology Chapter 20. Locomotion and Movement is the twentieth chapter in the Class 11 NEET syllabus for Biology. Below, we have provided Important Questions from Class 11 Biology Chapter 20 Locomotion and Movement for your NEET 2023 preparation. You can check it here for revision purposes.

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Locomotion and Movement Class 11 NEET Questions and Answers

We’ve compiled a list of essential questions about Locomotion and Movement biology class 11 chapter 19 that you should not miss while studying for your NEET Exams.

Locomotion and Movement MCQ for NEET

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Which ions play a key regulatory role in muscle contraction?

(a) Magnesium

(b) Calcium

(c) Sodium

(d) Potassium

Correct! Wrong!

The human skull has 22 bones that consists of

(a) 14 cranial and 8 facial bones

(b) 8 cranial and 14 facial bones

(c) 12 cranial and 10 facial bones

(d) 10 cranial and 12 facial bones

Correct! Wrong!

Which of the following exhibit ciliary movement?

(a) Phagocytes and macrophages

(b) Upper respiratory tract of humans

(c) Human sperms

(d) Movement in uterine wall

Correct! Wrong!

All the mineral elements are found in trace amounts in the skeletal muscle except

(a) magnesium

(b) sodium

(c) calcium

(d) potassium

Correct! Wrong!

During muscle contraction, the length of all of the following decreases except

(a) sarcomere

(b) I band

(c) A band

(d) H zone

Correct! Wrong!

Which of the following is an autoimmune disorder?

(a) Osteomalacia

(b) Muscular dystrophy

(c) Myasthenia gravis

(d) Paget's disease

Correct! Wrong!

Why ribs are called bicephalic?

(a) They have two articulation surfaces on the dorsal ends

(b) They articulates with vertebral column and sternum

(c) They articulates with sternum only

(d) They articulates with sternum at dorsal end and with vertebral column on the ventral end

Correct! Wrong!

Skeletal muscle contract by

(a) sliding of actin filaments over the myosin filament

(b) sliding of myosin filaments over the actin filament

(c) pulling of actin filaments

(d) pulling of myosin filaments

Correct! Wrong!

Which of the following is a sesamoid bone?

(a) Patella

(b) Tibia

(c) Fibula

(d) Femur

Correct! Wrong!

Select the incorrect statement

(a) Many monomeric proteins constitute one thick filament.

(b) The globular head with a short arm is called HMM.

(c) The tail of meromyosin is called LMM.

(d) The LMM projects outwards at regular distance and form cross arm.

Correct! Wrong!

Locomotion and Movement Match the Following Questions for NEET

Match column I with column II.

Column I	Column II
A. Skeletal muscle	(i) Spindle shaped
B. Red muscle fibres	(ii) Slow rate of contraction
C. Cardiac muscles	(iii) Voluntary
D. Visceral muscles	(iv) Intercalated discs

A. A-(iii), B-(ii), C-(iv), D-(i)

Locomotion and Movement Assertion and Reason Questions for NEET

In each of the following questions, a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it. Of the statements, pick the correct answer as :

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Assertion : A neuron generates an action potential in the sarcolemma, which leads to release of calcium ions in sarcoplasm. Reason : Calcium ions removes the masking of active sites on actin filaments

(a) If both A and R are true and R is the correct explanation of A

(b) If both A and R are true but R is not the correct explanation of A

(c) If A is true but R is false

(d) If A is false but R is true

Correct! Wrong!

Assertion : Tetany refers to a muscular disorder which causes rapid spasms. Reason : Calcium ions are low in body fluids.

(a) If both A and R are true and R is the correct explanation of A

(b) If both A and R are true but R is not the correct explanation of A

(c) If A is true but R is false

(d) If A is false but R is true

Correct! Wrong!

Assertion : Muscle fibre is a syncitium. Reason : Sarcoplasmic reticulum of the muscle fibre is the storehouse of potassium ions.

(a) If both A and R are true and R is the correct explanation of A

(b) If both A and R are true but R is not the correct explanation of A

(c) If A is true but R is false

(d) If A is false but R is true

Correct! Wrong!

Assertion : Cranium is formed by sutures. Reason : Flat skull bones fuse end to end with the help of dense fibrous connective tissues in the form sutures.

(a) If both A and R are true and R is the correct explanation of A

(b) If both A and R are true but R is not the correct explanation of A

(c) If A is true but R is false

(d) If A is false but R is true

Correct! Wrong!

Assertion : Visceral muscles are called striated muscles. Reason : Striated muscles have a striped appearance under the microscope.

(a) If both A and R are true and R is the correct explanation of A

(b) If both A and R are true but R is not the correct explanation of A

(c) If A is true but R is false

(d) If A is false but R is true

Correct! Wrong!

Locomotion and Movement Figure-Based Questions for NEET

Refer to the given figure and answer the following questions

(a) What does the given figure represent? Identify A, B, C and D.

A. The given figure shows the diagrammatic representation of a sarcomere. In this figure, A is A-band, B is Z-line, C is I-band and D is H-zone.

(b) Write differences between ‘A’ and ‘C’.

A.

S.no	A-band (Anisotropic band)	I-band (Isotropic band)
1.	It has wide zone.	It has thin Z-line.
2.	It gives dark appearance and hence also called dark band	It gives light appearance hence also called light band
3.	It contains myosin filaments and parts of actin filaments.	It contains part of actin filaments
4.	It length remains unchanged during muscle contraction	It shortens during muscle contraction

(c) Write about changes in length of A, C and D during muscle contraction.

A. During muscle contraction, H-zones and I-bands shorten but the length of A-band remains constant.

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