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Zoology

The scientific study of the animal kingdom, including extinct and possibly mythical beings.

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Zoology > Zoological terms

involution (in theolecithal ova)

Zoology; Zoological terms

Produces a doubled surface layer separated from yolk by a small space, the rudiment of the gastrocoel .

delemination

Zoology; Zoological terms

Surface cells migrate to the interior ( unipolar), occurring only at one pole or occurring at various points of the blastula surface ( multipolar)

gland

Zoology; Zoological terms

A group of cells organized into a descrete secretory organ

gonad

Zoology; Zoological terms

An animal reproductive organ that generates gametes

hermaphrodites

Zoology; Zoological terms

The presence in one individual of both ovarian and testicula tissue

holotrich

Zoology; Zoological terms

typically with uniform body ciliation, but variable (subclass of Ciliates)

mesenchyme

Zoology; Zoological terms

Embrionic connective tissue; made of loosly, often stellate cells and a dispersed ECM.