Examlex
According to a recent survey,health concerns are the number-one stressor reported by Americans.
Nemertea
A phylum of invertebrate animals known as ribbon worms or proboscis worms, characterized by their elongate bodies and a unique proboscis apparatus.
Tube-with-a-Tube
A body plan characteristic of many animals, in which the inner tube represents the digestive tract, and the outer tube forms the body wall.
Body Plan
The general structure and arrangement of body parts in an organism.
Malpighian Tubules
The excretory organs of many arthropods.
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