The development of pollen and ovules culminates in fertilization. Haploid spores are
Chapter 31, Problem 31.10(choose chapter or problem)
The development of pollen and ovules culminates in fertilization. Haploid spores are formed within ovules and anthers. The spores in anthers give rise to male gametophytespollen grainswhich produce sperm. A spore in an ovule produces the embryo sac, the female gametophyte. Each embryo sac has an egg cell. Pollination is the arrival of pollen grains onto a stigma. A pollen tube grows into the ovule, and sperm pass through it and fertilize both the egg and a second cell. This process is called double fertilization.
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