Zoology

Zoology

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Zoology

microstructure

Biology; Zoology

In eggshell, the shape, size, orientation, and distribution of components of the shell.

The chemical processes within an organic body that supply the energy necessary for life. The rate of metabolic processes is sometimes used as a way to differentiate organisms. For example, mammals ...

mesogloea

Biology; Zoology

Jellylike material between the outer ectoderm and the inner endoderm of cnidarians. May be very thin or may form a thick layer (as in many jellyfish).

mesoderm

Biology; Zoology

In animals with three tissue layers (i.e. all except sponges and cnidarians), the middle layer of tissue, between the ectoderm and the endoderm. In vertebrates, for instance, the mesoderm forms the ...

marsupial

Biology; Zoology

A mammal that gives live birth to young that have gestated for only a short period of time. The young usually crawl into a pouch (the marsupium) or protected area and attach to their mother’s teat to ...

mammilla

Biology; Zoology

In eggshell, the cone-like structure at the base of the shell unit where the shell unit attaches to the inner organic membrane.

lophophore

Biology; Zoology

Complex ring of hollow tentacles used as a feeding organ. The tentacles are covered by cilia, which generate a current to bring food particles into the mouth. The structure is only found in the ...