In a typically complete, bisexual, and hypogynous flower, the arrangement of floral whorls on the thalamus from the outermost to the innermost is:

In artificial hybridization experiments, if the female plant produces unisexual flowers, emasculation:

In an embryo sac, the cells that degenerate after fertilisation are:
1. Synergids and primary endosperm cell
2. Synergids and antipodals
3. Antipodals and primary endosperm cell
4. Egg and antipodals