What are the two parts of the vertebrate nervous system?

When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.

(a) State one way in which the above two processes are similar.

(b) State two ways in which the above two processes differ.

Name the two systems of control and coordination in higher animals.

If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?

Name the three components of a neuron (or nerve cell).