Give a schematic diagram showing reduction of a molecule of nitrogen and formation of ammonia.

Label the schematic diagram showing circulation of blood in the body.

Give a schematic diagram of life cycle of cockroach.

By drawing an electron dot diagram, show the lone pair effect leading to the formation of ammonium ion from ammonia gas and hydrogen ion.

Which of the following factors would favour the formation of ammonia?

During N_(2) fixation, reduction of one molecule of nitrogen into 2 molecules of NH_(3) consumes _____molecules of ATP.

Draw a schematic diagram to show the components of a reflex arc. Use arrows to indicate the flow of impulse.

Draw a simple ray diagram showing the formation of a primary rainbow.

Industrially, ammonia is obtained by direct combination between nitrogen and hydrogen. Is the formation of ammonia promoted by the use of high pressure or low pressure?

Draw diagrams to show the formation of beats?

Give schematic arrow diagram giving parts of plant showing movement of water from soil till xylem of the plant root cortex, root hair, soil, xylem, endodermis.