How many ovules are present in each ovary of a maize flower?

Which of the following is the female reproductive organ of a flower?

How many pistils are present in a monocarpellary gynoecium?

Choose the correct sentence$(s)$.
$(I)$ Nucleus of the functional megaspore divides meiotically to form two nuclei.
$(II)$ After the $8$-nucleate stage,cell walls are laid down leading to the organization of a typical female gametophyte.
$(III)$ The egg apparatus consists of two synergids and one egg cell.
$(IV)$ Three cells at the chalaza end are called antipodal cells.

The cells in the embryo sac which act as haustoria are:

The pistil (gynoecium) consists of how many parts?