In the figure given below,label the following parts: male gametes,egg cell,polar nuclei,synergid,and pollen tube.

(N/A) Based on the provided diagram of the egg apparatus showing the entry of the pollen tube into a synergid,the parts are labeled as follows:
$1$. Male gametes: These are the two small,dark-stained structures located inside the pollen tube.
$2$. Egg cell: This is the large cell located within the egg apparatus,containing the egg nucleus.
$3$. Polar nuclei: These are the two nuclei located in the central cell of the embryo sac.
$4$. Synergid: These are the two specialized cells flanking the egg cell,which guide the pollen tube.
$5$. Pollen tube: This is the tubular structure entering the embryo sac through the filiform apparatus of one of the synergids.