What is pollen grain?

or:What is pollen grain?or:Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm c

or:What is pollen grain?

or:Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat that protects the sperm cells during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants.

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