In Class 11 Final Exams there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Download of CBSE Class 11 Biology Chapter 20 Case Study and Passage Based Questions with Answers were Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Biology Locomotion and Movement to know their preparation level.

In CBSE Class 11 Biology Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Locomotion and Movement Case Study Questions With Answers

Here, we have provided case-based/passage-based questions for Class 11 Biology Chapter 20 Locomotion and Movement

Case Study/Passage-Based Questions

Case Study 1:

Skeletal system consists of a framework of bones and a few cartilages. This system has a significant role in movement shown by the body. Bone and cartilage are specialised connective tissues. The former has a very hard matrix due to calcium salts in it and the latter has slightly pliable matrix due to chondroitin salts. In human beings, this system is made up of 206 bones and a few cartilages. It is grouped into two principal divisions – the axial and the appendicular skeleton.

Axial skeleton comprises 80 bones distributed along the main axis of the body. The skull, vertebral column, sternum and ribs constitute axial skeleton. The skull is composed of two sets of bones – cranial and facial, that totals to 22 bones. Cranial bones are 8 in number. They form the hard protective outer covering, cranium for the brain. The facial region is made up of 14 skeletal elements which form the front part of the skull. A single U-shaped bone called hyoid is present at the base of the buccal cavity and it is also included in the skull. Each middle ear contains three tiny bones – Malleus, Incus and Stapes, collectively called Ear Ossicles. The skull region articulates with the superior region of the vertebral column with the help of two occipital condyles (dicondylic skull).

Vertebral column is formed by 26 serially arranged units called vertebrae and is dorsally placed. It extends from the base of the skull and constitutes the main framework of the trunk. Each vertebra has a central hollow portion (neural canal) through which the spinal cord passes. First vertebra is the atlas and it articulates with the occipital condyles. The vertebral column is differentiated into cervical (7), thoracic (12), lumbar (5), sacral (1-fused) and coccygeal (1-fused) regions starting from the skull. The number of cervical vertebrae are seven in almost all mammals including human beings. The vertebral column protects the spinal cord, supports the head and serves as the point of attachment for the ribs and musculature of the back. Sternum is a flat bone on the ventral midline of thorax.

1.) Which of the following is the connective tissue has pliable matrix?

• a) Bone
• b) Blood
• c) Cartilages
• d) All of the above

Ans: b) Blood

2.) Human skull is composed of ______________

• a) Cranial bones
• b) Facial bones
• c) Pliable matrix
• d) Both a & b

Ans: d) Both a & b

3.) Give the location where hypoid bone is present?

Ans: A single u-shaped bone called hyoid is present at the base of the buccal cavity and it is also included in the skull

4.) Name the bones present in the middle ear?

Ans:Middle ear consist three tiny bones – Malleus, Incus and Stapes, collectively called Ear Ossicles.

5) What is neural canal?

Ans:Vertebral column is formed by 26 serially arranged units called vertebrae and is dorsally placed. It extends from the base of the skull and constitutes the main framework of the trunk. Each vertebra has a central hollow portion through which the spinal cord passes, those hollow portion is known as neural canal.

6) Give the names of bones are part of the axial skeleton.

Ans: The bones of the skeletal system are divided into two parts- the axial skeleton and the appendicular skeleton. The skull, sternum, vertebral column and ribs make up the axial skeleton of the body.

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