Reproduction

Dec
23

Balanoglossus reproduction-Tornaria larva

wolf on December 23rd, 2010

Asexual reproduction It is of rare occurrence. It is reported by Gilchrist (1923) in Balanoglossus capensis. During summer the juvenile phase reproduces by cutting off small pieces from the tail end. The separated part later on develops completely into an adult sexual type in next winter. Sexual reproduction The sexes are separate but there is [...]

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Invertebrate Zoology 1 Comment »
Oct
25

Reproduction in Obelia

wolf on October 25th, 2010

Obelia is a tree-like branched, marine colonial cnidarian, growing on the surface of sea-weeds, rocks and pilings along the sea-coasts. Colonies appear like whitish or light-brown branched threads, about 30 mm. to several cms in height. The colony arises by budding from a single hydra-like individual, the buds fail to separate and after repeated budding [...]

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Invertebrate Zoology 1 Comment »
Sep
9

Sexual reproduction in Paramoecium

wolf on September 9th, 2010

How Paramoecium reproduces sexually? In Paramoecium a peculiar type of sexual reproduction known as conjugation takes place. In conjugation there is an exchange of micronuclear material without the fusion of the cytoplasm.

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Invertebrate Zoology No comments »
Aug
31

Reproduction in Euglena

wolf on August 31st, 2010

Reproduction in Euglena In E. viridis no sexual reproduction occurs. It reproduces by asexual binary and multiple fissions and undergoes encystment. Under favorable conditions euglenas reproduce by longitudinal binary fission.  The longitudinal binary fission is always symmetrogenic, that is, the parental Euglena divides into two daughter individuals, where one is the plane mirror image of [...]

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Invertebrate Zoology No comments »