Study the diagram given below and answer the questions that follow:

(a) Name the phenomenon depicted by the shoot in the above diagram.

(b) Which plant hormone plays an important role in the above movement?

(c) Name one stimulus which gives a positive response for the roots but negative response for the shoot.

What is the scientific name for man?

State two structural differences between an artery and vein.

Mention any two features of the Cro-Magnon man.