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Chapters
2: Biological Classification
3: Plant Kingdom
4: Animal Kingdom
5: Morphology of Flowering Plants
6: Anatomy of Flowering Plants
7: Structural Organisation in Animals
8: Cell : the Unit of Life
9: Biomolecules
10: Cell Cycle and Cell Division
11: Transport in Plants
12: Mineral Nutrition
13: Photosynthesis in Higher Plants
14: Respiration in Plants
15: Plant Growth and Development
16: Digestion and Absorption
17: Breathing and Exchange of Gases
18: Body Fluids and Circulation
19: Excretory Products and Their Elimination
▶ 20: Locomotion and Movement
21: Neural Control and Coordination
22: Chemical Coordination and Integration
![NCERT Exemplar solutions for Biology [English] Class 11 chapter 20 - Locomotion and Movement - Shaalaa.com](/images/biology-english-class-11_6:5f2b1b2038084cf381bfa42c826a928c.jpg "NCERT Exemplar solutions for Biology [English] Class 11 chapter 20 - Locomotion and Movement")
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Solutions for Chapter 20: Locomotion and Movement
Below listed, you can find solutions for Chapter 20 of CBSE NCERT Exemplar for Biology [English] Class 11.
NCERT Exemplar solutions for Biology [English] Class 11 20 Locomotion and Movement Exercises [Pages 114 - 118]
MULTIPLE CHOICE QUESTIONS
Match the following and mark the correct option
| Column I | Column II |
| A. Fast muscle fibres | i. Myoglobin |
| B. Slow muscle fibres | ii. Lactic acid |
| C. Actin filament | iii. Contractile unit |
| D. Sarcomere | iv. I-band |
A - i, B - ii, C - iv, D - iii
A - ii, B - i, C - iii, D - iv
A - ii, B - i, C - iv, D - iii
A - iii, B - ii, C - iv, D - i
Ribs are attached to ______.
Scapula
Sternum
Clavicle
Ilium
What is the type of movable joint present between the atlas and axis?
Pivot
Saddle
Hinge
Gliding
ATPase of the muscle is located in ______.
Actinin
Troponin
Myosin
Actin
Intervertebral disc is found in the vertebral column of ______.
Birds
Reptiles
Mammals
Amphibians
Which one of the following is showing the correct sequential order of vertebrae in the vertebral column of human beings?
Cervical — lumbar — thoracic — sacral — coccygeal
Cervical — thoracic — sacral — lumbar — coccygeal
Cervical — sacral — thoracic — lumbar — coccygeal
Cervical — thoracic — lumbar — sacral — coccygeal
Which one of the following pairs is incorrect?
Hinge joint: between Humerus and Pectoral girdle
Pivot joint : between atlas and axis
Gliding joint : between the carpals
Saddle joint : between carpals and metacarpals of thumb
Knee joint and elbow joint are examples of ______.
Saddle joint
Ball and socket joint
Pivot joint
Hinge joint
Macrophages and leucocytes exhibit ______.
Ciliary movement
Flagellar movement
Amoeboid movement
Gliding movement
Which one of the following is not a disorder of bone?
Arthritis
Osteoporosis
Rickets
Atherosclerosis
Which one of the following statement is incorrect?
Heart muscles are striated and involuntary
The muscles of hands and legs are striated and voluntary
The muscles located in the inner walls of alimentary canal are striated and involuntary
Muscles located in the reproductive tracts are unstriated and involuntary
Which one of the following statements is true?
Head of humerus bone articulates with acetabulum of pectoral girdle.
Head of humerus bone articulates with the glenoid cavity of pectoral girdle.
Head of humerus bone articulates with acetabulum of pelvic girdle.
Head of humerus bone articulates with a glenoid cavity of pelvic girdle.
Muscles with characteristic striations and involuntary are ______.
Muscles in the wall of alimentary canal
Muscles of the heart
Muscles assisting locomotion
Muscles of the eyelids
Match the following and mark the correct option
| Column I | Column II |
| A. Sternum | i. Synovial fluid |
| B. Glenoid Cavity | ii. Vertebrae |
| C. Freely movable joint | iii. Pectoral girdle |
| D. Cartilaginous joint | iv. Flat bones |
A - ii, B - i, C - iii, D - iv
A - iv, B - iii, C - i, D - ii
A - ii, B - i, C - iv, D - iii
A - iv, B - i, C - ii, D - iv
VERY SHORT ANSWER TYPE QUESTIONS
Name the cells/tissues in human body which exhibit ameboid movement
Name the cells/tissues in human body which exhibit ciliary movement
Locomotion requires a perfect coordinated activity of muscular, ______, ______ systems.
Sarcolemma, sarcoplasm and sarcoplasmic reticulum refer to a particular type of cell in our body. Which is this cell and to what parts of that cell do these names refer to?
Label the different components of actin filament in the diagram given below.
The three tiny bones present in middle ear are called ear ossicles. Write them in correct sequence begining from ear drum.
What is the difference between the matrix of bones and cartilage?
Which tissue is afflicted by Myasthenia gravis? What is the underlying cause?
How do our bone joints function without grinding noise and pain?
Give the location of a ball and socket joint in a human body.
Our fore arm is made of three different bones. Comment.
SHORT ANSWER TYPE QUESTIONS
With respect to rib cage, explain the following:
Bicephalic ribs
With respect to rib cage, explain the following:
True ribs
With respect to rib cage, explain the following:
Floating ribs
In old age, people often suffer from stiff and inflamed joints. What is this condition called? What are the possible reasons for these symptoms?
Exchange of calcium between bone and extracellular fluid takes place under the influence of certain hormones. What will happen if more of Ca++ is in extracellular fluid?
Exchange of calcium between bone and extracellular fluid takes place under the influence of certain hormones. What will happen if very less amount of Ca++ is in the extracellular fluid?
Name atleast two hormones which result in fluctuation of Ca++ level.
Rahul exercises regularly by visiting a gymnasium. Of late he is gaining weight. What could be the reason? Choose the correct answer and elaborate.
Rahul has gained weight due to accumulation of fats in body.
Rahul has gained weight due to increased muscle and less of fat.
Rahul has gained weight because his muscle shape has improved.
Rahul has gained weight because he is accumulating water in the body.
Radha was running on a treadmill at a great speed for 15 minutes continuously. She stopped the treadmill and abruptly came out. For the next few minutes, she was breathing heavily/fast. Answer the following questions.
What happened to her muscles when she did strenuously exercised?
Radha was running on a treadmill at a great speed for 15 minutes continuously. She stopped the treadmill and abruptly came out. For the next few minutes, she was breathing heavily/fast. Answer the following questions.
How did her breathing rate change?
Write a few lines about Gout.
What is the source of energy for muscle contraction?
What are the points for articulation of Pelvic and Pectoral girdles?
LONG ANSWER TYPE QUESTIONS
Calcium ion concentration in blood affects muscle contraction. Does it lead to tetany in certain cases? How will you correlate fluctuation in blood calcium with tetany?
An elderly woman slipped in the bathroom and had severe pain in her lower back. After X-ray examination doctors told her it is due to a slipped disc. What does that mean? How does it affect our health?
Explain sliding filament theory of muscle contraction with neat sketches.
Discuss the role of Ca2+ ions in muscle contraction. Draw neat sketches to illustrate your answer.
Differentiate between Pectoral and Pelvic girdle.
How does a muscle shorten during its contraction and return to its original form during relaxation?
Solutions for 20: Locomotion and Movement
NCERT Exemplar solutions for Biology [English] Class 11 chapter 20 - Locomotion and Movement
Shaalaa.com has the CBSE Mathematics Biology [English] Class 11 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT Exemplar solutions for Mathematics Biology [English] Class 11 CBSE 20 (Locomotion and Movement) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT Exemplar textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Biology [English] Class 11 chapter 20 Locomotion and Movement are Introduction of Locomotion and Movement, Types of Movement, Muscles, Structure of Contractile Proteins, Mechanism of Muscle Contraction, Skeletal System, Joints and Its Classification, Disorders of Muscular and Skeletal System, Locomotion and Movement (Questions).
Using NCERT Exemplar Biology [English] Class 11 solutions Locomotion and Movement exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Exemplar Solutions are essential questions that can be asked in the final exam. Maximum CBSE Biology [English] Class 11 students prefer NCERT Exemplar Textbook Solutions to score more in exams.
Get the free view of Chapter 20, Locomotion and Movement Biology [English] Class 11 additional questions for Mathematics Biology [English] Class 11 CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.
