Zoology

Zoology

Contributors in Zoology

Zoology

In many animals, the body is divided into repeated subunits called segments, such as those in centipedes, insects, and annelids. Segmentation is the state of having or developing a body plan in this ...

pygidium

Biology; Zoology

In trilobites, the posterior division of the body, formed by fusion of the telson with one or more posterior pleurae.

proboscis

Biology; Zoology

Elongated organ, usually associated with the mouth. The proboscis is an important feeding appendage in echiurans.

precocial

Biology; Zoology

Describes young that are mobile and fairly self-sufficient at birth. Precocial young are generally well-developed (and large) at birth, born with their eyes open, and able to walk. Chickens and ...

pleurae

Biology; Zoology

In trilobites and other arthropods, pleurae are elongated flat outgrowths from each body segment, that overlie and protect the appendages.

pore

Biology; Zoology

Any opening into or through a tissue or body structure.

placenta

Biology; Zoology

In mammals, a tissue formed within the uterus through which nutrients are passed from the mother to the embryo (and later the fetus) and its wastes are removed. It is analogous to the protective ...