When the pollen grain is mature, it contains two cells, the _____A______ and ____B_____ .
 

	A	B
1	generative cell	spore mother cell
2	vegetative cell	spore mother cell
3	spore mother cell	male gamete
4	vegetative cell	generative cell

When a pollen grain is mature it contains two cells, a vegetative cell and generative cell. The vegetative cell is bigger, has abundant food reserve and a large irregularly shaped nucleus. The generative cell is small and floats in the cytoplasm of the vegetative cell. It is spindle-shaped with dense cytoplasm and a nucleus.