Explain wind pollination and give explanation of why wind-pollinated flowers produce a large amount of pollen grains.

Grafting is a technique used to increase the numbers of a particular variety of plant. A stem cutting, from a commercially grown fruit tree, P was grafted onto the roots of a non-commercial tree Q.

a) What is the type of reproduction shown in this process? 
b) If the new tree bears fruits, which variety will the fruits would be produced - commercial or non-commercial? Why?
c) List three ways to ensure that grafting in the above case is successful? 
d) Which other technique, similar to grafting, can be used to increase fruit production? 

The diagram represents a section through a flower. What are the names of the labelled structures? 

State and describe the dispersal method for the given plant.