Name the two systems of control and co-ordination in higher animals.

Give the scientific terms used to represent the following:

A. Bending of a shoot towards light.

B. Growing of roots towards the earth.

C. Growing of a pollen tube towards ovule.

D. Bending of roots towards water.

E. Winding of tendril around a support.

Give example of the movement of a plant part which is caused by the loss of water.

Name the three components of a nerve cell.

Name the most important part of the human brain.