Question

What is the relationship between the germ pore and pollen tube formation?

पर्याय

• The germ pore closes after the pollen tube forms

• The intine grows out through the germ pore to form the pollen tube

• The germ pore transports nutrients into the pollen grain

• The germ pore is the location where the generative cell divides

Answer 1

The germ pore is a pre-formed opening or thin region in the pollen wall. During pollen germination on the stigma, the intine (inner cellulose and pectin layer) grows out through this germ pore to initiate pollen tube formation. The germ pore essentially provides a predetermined site for tube emergence, facilitating the controlled growth of the pollen tube.