In a typically complete, bisexual, and hypogynous flower, the arrangement of floral whorls on the thalamus from the outermost to the innermost is:
1. Calyx, corolla, androecium, and gynoecium
2. Calyx, corolla, gynoecium, and androecium
3. Gynoecium, androecium, corolla, and calyx
4. Androecium, gynoecium, corolla, and calyx
In artificial hybridization experiments, if the female plant produces unisexual flowers, emasculation:
1. Must be done before maturity.
2. Must be done after maturity.
3. Must be done at maturity.
4. Is not needed.
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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
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