The procedure of an experiment i.e., ‘sunlight is essential for photosynthesis’ is given here. Arrange them in a correct order.

   i. Cover one of its leaves partly with a strip of black paper and put the plant in sunlight for few hours.

  ii.  Remove the green colored chlorophyll from the leaf by boiling it first in water and then in alcohol. Wash the leaf with water again.

 iii. Take a healthy potted plant and kept it in a dark room for 2-3 days to de-starch the leaves.

 iv. Pluck this covered leaf and remove the black strip.