microspores
Male gametophyte origins
Microspores are the smaller of two types of spores produced by certain plants, developing into male gametophytes.
In flowering plants, microspores become pollen grains.
The term appears in botany and plant biology: The anthers release microspores during pollination.
Contrast with megaspores, which develop into female structures.
Haploid reproductive generation
- sporeAsexual reproductive cell
- haploidSingle chromosome complement
- meiosisGamete-producing cell division
- antherPollen-producing structure
stamen · pollen grain · tetrad · germination
Haploid reproductive generation
- gameteHaploid reproductive cell
- fertilizationGamete fusion creating zygote
- zygoteFirst embryonic cell
- embryoOrganism before birth
Exposed-seed plant
- angiospermPlant producing flowers, fruits
- fernSpore-spreading vascular plant
- horsetailJointed flowerless marsh plant
- mossSpore-bearing ground cover
Flower reproductive transfer
- pollen tubeGrowth carrying sperm to ovule
- allergenImmune response trigger
- hayfeverAllergic reaction to pollen
- pollen countAirborne spore concentration metric
allergy season · wind-pollinated · pollen basket · cross-pollination · self-pollination
gametophyte
Haploid reproductive generation
- sporeAsexual reproductive cell
- haploidSingle chromosome complement
- meiosisGamete-producing cell division
anther · stamen · pollen grain · tetrad · germination
gametophyte
Haploid reproductive generation
- gameteHaploid reproductive cell
- fertilizationGamete fusion creating zygote
- zygoteFirst embryonic cell
gymnosperm
Exposed-seed plant
- angiospermPlant producing flowers, fruits
- fernSpore-spreading vascular plant
- horsetailJointed flowerless marsh plant
moss · liverwort · clubmoss · seedless · vascular · cone · flower
pollination
Flower reproductive transfer
- pollen tubeGrowth carrying sperm to ovule
- allergenImmune response trigger
- hayfeverAllergic reaction to pollen
pollen count · allergy season · wind-pollinated · pollen basket · cross-pollination · self-pollination