What will be the number of chromosomes in the gamete of maize if its meiocyte contains 20 chromosomes ?

10

The correct answer is Option (1) - 10

The number of chromosomes in a gamete is typically half the number found in somatic cells. This process, called meiosis, ensures the preservation of the species' chromosome number from generation to generation.

So, if the meiocyte (a cell undergoing meiosis) of maize contains 20 chromosomes, the number of chromosomes in the gamete would be half of that, which is 10 chromosomes.