DUHHH!!!!![:
An apple leaf midge is a creature which is a pest to apple trees, Latin name Dasineura mali.
The scientific name for custard apple leaf is Annona reticulata.
In woodapple the leaf is compound. It is generally trifoliate.
The leaves of the custard apple has pinnately reticulate venation.
The leaf does not fall straight down. It falls slowly because of air resistance. The air provides upward force. The upward force on the apple is negligible.
The plant you are referring to is called "May Apple". The small ripe fruit is edible in the fall. The rest of the plant is poisonous. It is called "May Apple" or "Custard Apple" though it is not known why - the fruit ripens in the fall, as stated above.
The four-leaf clover or Shamrock is considered a lucky leaf. This belief is has been popular since ancient times and was first considered by the Irish.
When a leaf is a parallel venation, we can considered it as a monocot
Malus Domestica
Malus fusca
It is for protection
It came off a tree