Phylum Nemertea (Rhynchocoela)
Phylum Nemertea (Rhynchocoela)
Phylum Nemertea (Rhynchocoela)
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Reproduction<br />
Internal fertilization. Sperm may be released in the mucous mating mass and move<br />
to the ovaries of a female. The structure of spermatozoa is very different from that of<br />
Turbellaria<br />
Egg capsules may form within the body (Fig 11.13) where part of development takes<br />
place.<br />
Some terrestrial and deep pelagic nemerteans are ovoviviparous, direct development<br />
(Fig. 11.14)<br />
Cleavage holoblastic and spiral. Rhynchocoel is formed through schizocoely, (true<br />
coelomic cavity)
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