dioecious

Examples of dioecious in the following topics:

• Class Scyphozoa

  • Scyphozoans are free-swimming, polymorphic, dioecious, and carnivorous cnidarians with a prominent medusa morphology.
  • Scyphozoans are dioecious animals, having separate sexes.

• Phylum Rotifera

  • Rotifers are dioecious organisms (having either male or female genitalia) and exhibit sexual dimorphism (males and females have different forms).
  • In many dioecious species, males are short-lived and smaller, with no digestive system and a single testis.

• Sexual Reproduction in Angiosperms

  • ., C. papaya or Cannabis)are termed dioecious, or "two homes."

• Phylum Mollusca

  • Most mollusks are dioecious animals where fertilization occurs externally, although this is not the case in terrestrial mollusks, such as snails and slugs, or in cephalopods.

• The Life Cycle of an Angiosperm

  • Some species of angiosperms are hermaphroditic (stamens and pistils are contained on a single flower), some species are monoecious (stamens and pistils occur on separate flowers, but the same plant), and some are dioecious (staminate and pistillate flowers occur on separate plants).

• Phylum Annelida

  • Annelids may be either monoecious, with permanent gonads (as in earthworms and leeches), or dioecious, with temporary or seasonal gonads that develop (as in polychaetes).

• Phylum Nematoda

  • Nematodes employ a variety of reproductive strategies that range from monoecious to dioecious to parthenogenic, depending upon the species under consideration.

• Phylum Cnidaria

  • When the reproductive buds mature, they break off and become free-swimming medusa, which are either male or female (dioecious).

• Pollination and Fertilization

  • In other species, the male and female flowers are borne on different plants, making them dioecious.