Test: Body Movements - Class 6 MCQ

Cartilage is a flexible connective tissue that is present in various parts of the body. In the outer parts of the ear, at the end of the nose, and in the discs between vertebrae of the backbone, cartilage provides structural support and flexibility. Therefore, option (d) is correct.

The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. 

The only movable skull bone among the options provided is the lower jaw, also known as the mandible. The upper jaw, teeth, and eye socket are not typically movable bones.

Ball and socket joints allow a wide range of motion. The shoulder joint and hip joint are examples of ball and socket joints. Therefore, option (d) is correct.

The shoulder does not have a hinge joint. Hinge joints allow movement in one plane (like the opening and closing of a door), while the shoulder has a ball and socket joint, enabling a broader range of motion.

A streamlined body is a shape that lowers the friction drag between a fluid, like air and water, and an object moving through that fluid.

Fish has a streamlined body.

Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling.

A ball and socket joint provides the greatest degree of movement among different kinds of joints including rotation, flexion, extension, abduction, and adduction.

The skeleton provides a framework to the body, giving it structure, support, and the ability to maintain its shape.

The rib cage is the arrangement of ribs attached to the vertebral column and sternum in the thorax of most vertebrates, that encloses and protects the heart and lungs.