Question

Which type of pollen tube entry into the ovule occurs through the chalazal end?

Options

• Synergamy

• Mesogamy

• Chalazogamy

• Porogamy

Answer 1

Chalazogamy is the type of pollen tube entry that occurs through the chalazal end (base) of the ovule. This is a rare form of entry found in plants such as Casuarina and Betula. The chalaza is the basal region of the ovule opposite the micropyle.