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Rhombozoans: Rhombozoa

Behavior And Reproduction

In both the wormlike phase and as specialized embryos, rhombozoans swim by movement of the hairlike fibers on their bodies. Scientists do not know how the specialized embryos infect a new host and develop into wormlike rhombozoans. Wormlike embryos develop asexually from a cell of a parent and grow into adults. Asexual (ay-SEK-shuh-wuhl) reproduction is that which takes place without the uniting of egg and sperm for the transfer of DNA from two parents. Crowding of rhombozoans in a host's kidney can cause a shift from asexual to sexual reproduction. When crowding occurs, rhombozoans develop a sex organ that contains both eggs and sperm. The mature sperm unite with eggs, and the fertilized (FUR-teh-lyzed) eggs develop into the specialized form of embryos.


Additional topics

Animal Life ResourceJellyfish, Sponges, and Other Simple AnimalsRhombozoans: Rhombozoa - Physical Characteristics, Behavior And Reproduction, No Common Name (dicyemodeca Deca): Species Account - GEOGRAPHIC RANGE, HABITAT, DIET, RHOMBOZOANS AND PEOPLE, CONSERVATION STATUS