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13 Cards in this Set
- Front
- Back
Sponges
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Filter Feeders
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Cells found in the ectoderm of jellyish
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Nematocysts
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A type of ________ in whichseveral differentplanes could dividean animalinto equal halves.
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Radial Symmetry
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there are two equal sides of the animal
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Bilateral Symmetry
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what most animals control their bodies through _______.
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Neurons
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an invertibrates switchboard is a ________.
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Ganglion
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somthing an organism can sense
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Stimulus
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a structure that can sense the stimulus and then start an impuls traveling along a neuron.
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Sensory Receptors
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because the blood never leaves the blood vessels this systm is called ______ ___________ ______.
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Closed Circulatory System
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these help control an earthwormas blood pressure
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Aortic Arches
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the smalest blood vessel
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Capillaries
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blood vessels that carries blood to the heart
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veins
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all but the first and the last few segments have this
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nephridia
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