Why do worms do not self fertilize?


  • Réponse publiée par: kenn14


    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.

  • Réponse publiée par: cleik


    1. hermophrodites

    a very common worm

  • Réponse publiée par: meteor13

    ha nob man be pro dude da heck

  • Réponse publiée par: danigirl12

    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 Hermaphrodites


    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.


    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.


  • Réponse publiée par: pauyonlor
    The ratio would be to have 25% pure bred green unripe, 50% cross bred green & yellow unripe and 25% pure bred yellow unripe :) 
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Why do worms do not self fertilize?...