Chlorophyll is Essential for Photosynthesis

 

1. i) De-starch a leaf of potted plant by wrapping it in aluminum foil.

 

1. ii) Remove the leaf from plant.

 

iii) Its outline is carefully drawn to note the position of chlorophyll.

 

1. iv) Now apply iodine to leaf to test the presence of starch.

 

1. v) We observe that parts with iodine turn blue while white part turn brown.

 

1. vi) This result shows that starch is formed in only those parts where chlorophyll exists.

 

vii) If photosynthesis is possible without chlorophyll than white part should also turn blue.

 

Traditional paper books: they are expensive, of course, we are not talking about Soviet editions, which are now sold at 10 rubles per volume, but modern books, the price of which starts from 300 and can go up to 5,000; take up a lot of space, which is especially important for those who live in rented housing or are forced to huddle in their own small apartment, where there is simply no room for a bookcase