How many meiotic divisions are required to produce 1000 seeds(grain) of cyprus plant which is an expection to the division rule of ( n + n/4 ) ?

n+n/4  division rule is the rule for determining  the number of meiotic divisions required to produce seeds in normal cases of angiospermous plants.

n represents number of seeds. For example -  for 20  seeds production, total number of meiotic divisions required  are 25.

But in case of Cyperus, abnormal behaviour is shown while pollen development. Of the four nuclei formed after meiosis during microsporogenesis, only one function.

 So, this result in exceptional case of  n+n/4  division rule.

 Total number of meiotic divisions required to produce  1000 seeds in Cyperus will be equal to 2000.

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