Body Movements ...

Which of the following pairs is matched incorrectly?

The jerky movements in fishes are helped by

Structures which enable a bird to fly are

X, Y and Z are three organisms. X contracts on movement. Y has legs but can fly too. Z has strong legs but no wings.

Which of the following sentence is untrue with regard to X, Y and Z?

Mohan is a good cricket player. One day while playing, a fast ball hit the area of his heart. In such condition, how did his heart remain protected?

Savita visited a biology lab and saw some animal specimens. She was told a characteristic of each organism. The characteristics were as follows:

a. It has hollow bones.
b. It has body just like the shape of boat.
c. It can walk, fly and climb.
d. Tiny bristles are present on the underside of its body.

Identify the organisms correctly.

The joint present in the skull is an example of:

Human skeleton is made up of all of the following, except

Consider the following sentences:

Sentence A: Backbone is made up of many small bones.
Sentence B: The bones of backbone are joined to each other by immovable joints.

With regard to these sentences, which of the following options is correct?

Read the following statements and answer accordingly.

Sentence A: Movement of an organism from one place to other place is called locomotion.
Sentence B: All movements are not locomotions.

A has 3 pairs of legs. B has a single foot. C is a vertebrate without leg.

Which of the following statements is true about A, B and C?

Soft parts of skeleton are found in:

a. Ear
b. Pelvic bones
c. Joints
d. Muscles

Cavities are essential for joint A, whereas joint B allows movement in only one direction. Where are these joints located?

Few characteristics of an organism are given below:

a. Secretes the slime layer
b. Does not have endoskeleton
c. Has CaCO₃ in the protective structure

Which organism is described above?