1.

show that pollen grains,need sugar to germinate

Answer»

1). Let us take a little amount (10-15 parts) of sucrose solution in apetridish. 0.01 % sodium borate solution is then mixed with sucrose solution.

2). On this mixture a good amount of fresh pollen grain is then spread over. In this condition the set is left for one day.

Repeat the above steps without the sucrose solution.We will observe growth of pollen tube in the sample with sucrose solution and not in the absence of sucrose solution.



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