In fact, most species do not self-fertilize, and many are physically incapable of self-fertilization. ... The reproductive organs of earthworms are positioned at different ends of their bodies, so that fertilization of the eggs is only possible when the worms are aligned in opposite directions.
a very common worm
ha nob man be pro dude da heck
What the hell is Hermaphrodite?It is an organism with both male and female genitalia.Parehong may kasarian ng lalaki at babae sa iisang organismo.
2 Examples of HermaphroditesFlowersEarthworms
Their means of preventing self-fertilization?Flower - Some plants have evolved to have self-incompatibility mechanisms to avoid self-pollination. A physiological barrier makes it difficult or impossible for a flower to fertilize itself even though it may have been abundantly pollinated with its own pollen.Earthworms - They cannot reproduce by self-fertilization. The reason is that the male and female sex organs do not mature at the same time.
BONUS:Dichogamy - the ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented.Self-incompatibility mechanism - is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing.Pollen - is a powdery substance consisting of pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells).Pollen grains - are microscopic structures that carry the male reproductive cell of plants.Gametes - are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm.Microgametophytes - The male gametophyte that develops from the microspores of heterosporous plants. The pollen grains of gymnosperms and angiosperms.