Name the nerves which carry impulses from eyes and ear to the brain.

The diagram given alongside represents a stage during the mitotic cell division. Study the same and answer the following questions.

(i) Identify the stage. Give reasons to support your answer.

(ii) Label the parts numbered 1 and 2.

(iii) Draw a neat and labelled diagram of the stage that comes before the stage shown in the figure.

What is 'Reflex action'? What are its two main types ?

Differentiate between 'Nerve' and 'Ganglion' with respect to their composition.