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An Introduction to Zoology:  Chapter 5
An Introduction to Zoology: Chapter 5
Published by The Lone Ranger
08-05-2008
Default Asexual Reproduction

Asexual Reproduction:
Many simple animals can reproduce asexually through the process of fission. Fission occurs when the animal simply divides into two, and each half then re-grows whatever organs it needs in order to make itself whole.


A planarian (Phylum Platyhelminthes) can
reproduce asexually through fission. The
animal splits in two, then the anterior half
grows a new tail while the posterior half
grows a new head.

Another form of asexual reproduction that is common in simple animals is budding. Budding occurs when a “bud” grows on the animal’s side and grows into a smaller, genetically-identical version of the “parent.” When it has become large-enough, the smaller animal breaks free of its “parent” and becomes independent.


A hydra (Phylum Cnidaria) reproducing through budding.


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Thanks, from:
Corona688 (08-10-2008), Ensign Steve (08-05-2008)
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