CBSE Questions for Class 6 Biology Body Movements Quiz 4 - MCQExams.com

$$\textbf{Concept applied:}$$ Cartilage is a type of flexible tissue found in many parts of the body providing support and flexibility.

$$\textbf{Correct option:}$$ Option A

$$\textbf{Explanation for correct option:}$$

Option A

$$\bullet$$ The ear has the presence of cartilage on its upper portion (also known as pinna). 

$$\bullet$$ This cartilage maintains the shape of the ear and also allows its flexibility.

$$\bullet$$ It supports the external ear and allows the ear bones to develop.

$$\textbf{Explanation for incorrect options:}$$

Option B: The hands of the body are made up of bones and muscles. There is the presence of cartilage at the joints to avoid friction during movement.

Option C: The legs of the body are made up of long bones with associated muscles. The joints of these long bones have the presence of cartilage which acts as a cushion.

Option D: The shoulder part is made up of shoulder bones that form the pectoral girdle.

$$\textbf{Conclusion:}$$ The upper portion of the ear (pinna) is made completely of cartilage.

• In humans, Wrist is made up of several bones called carpal. Thus, Option A is correct.
  

• Bones are the hard, inelastic, and tough organ that forms part of the vertebral skeleton, unlike the cartilage, which is soft.
• Part of the skeleton that is not hard as bones and can be bent is cartilage.
• They are found in the upper part of the ear, the tip of the nose, and at the tips of long bones.
• So, the correct answer is option D.

$$\textbf{Correct Option A}$$

$$\textbf{Solution}$$

$$\bullet$$Bipedal locomotion is a type of locomotion in which the organism can move with the help of two legs in an upright position. The organism is able to walk and run on two rear limbs.