Q.Differentiate between porogamy and chalazogamy as modes of pollen tube entry into the ovule.

Porogamy is the most common mode by which a pollen tube enters the ovule: after growing through the style and into the ovary, the tube approaches the ovule and passes directly through the micropyle -- the narrow opening left in the integuments -- to reach the embryo sac within the nucellus. The vast majority of flowering plants follow this route. …

Match the Greek-root name to the ovule landmark it names -- 'poro-' relates to the micropyle pore, 'chalazo-' to the chalaza -- and note which is the …

Assuming chalazogamy is the typical route because it sounds equally 'standard' -- porogamy via the micropyle is overwhelm …