Examlex
What is conservation biology? Devise an in situ and an ex situ conservation plan for the preservation of the White Rhinoceros.
Echinoderms
Phylum of spiny-skinned marine deuterostome invertebrates characterized by a water vascular system and tube feet; include sea stars, sea urchins, and sea cucumbers.
Segmentation
A body plan in which the body is divided into a series of compartments (segments).
Deuterostomia
Deuterostomia is a major division of the animal kingdom that includes groups like the chordates and echinoderms, characterized by the developmental feature in which the anus forms from the first opening in the embryo, with the mouth forming later.
Protostomes
A major group of animals in which the mouth develops from the first opening in the embryo, with examples including mollusks, annelids, and arthropods.
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