In which stage of meiosis is the enzyme recombinase required?

The number of chromosome groups at the equatorial plate in metaphase-$I$ of meiosis in a plant with $2n = 50$ shall be:

Identify the figure:

In meiosis,the number of chromosomes in the daughter cells compared to the parent cell is:

The diagram shows meiosis and gamete formation in a cell with four chromosomes. Identify the stages $P$ and $Q$.

If the diploid number in $G_1$ phase is $8$,what should be the number of chromosomes in daughter cells after meiosis-$I$ and meiosis-$II$,respectively?