Protostome
A member of one of two distinct evolutionary lines of coelomates, consisting of the
annelids, mollusks, and arthropods, and characterized by spiral, determinate cleavage,
schizocoelous formation of the coelom, and development of the mouth from the
blastopore.
Protozoan
A protist that lives primarily by ingesting food, an animal-like mode of nutrition.
Prototherians
Warm blooded vertibrates characterized by mammary glands in the female.
Protrusible
Capable of being thrust forward, as the tongue
Provirus
Viral DNA that inserts into a host genome.
Proximate causation
The hypothesis about why natural selection favored a particular animal behavior.
Pseudocoelom
A body cavity consisting of a fluid-filled space between the endoderm and the mesoderm;
characteristic of the nematodes.
Pseudocoelomate
An animal, such as a rotifer or roundworm, whose body cavity is not completely lined by
mesoderm.
Pseudopodium
A cellular extension of amoeboid cells used in moving and feeding.
Pteridophyta
A division of the plant kingdom that includes the ferns, horsetails, and clubmosses.
Pyrenoid
A proteinaceous structure found within the chloroplast of certain algae and hornworts. It is
considered to be associated with starch deposition.
Pulmocutaneous arteries
Pertaining to the lungs and the akin; as, the pulmocutaneous arteries of the frog.
Pulmonary
Pertaining to the lungs.
ff
(ff)
#1