Invertebrate animal vocabulary Flashcards

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1
Q

Vertebrates

A

Have a backbone. Less than 5% of all animal species.

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2
Q

Invertebrates

A

Has a backbone. Makes up more than 95% of all animal species.

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3
Q

Consumer

A

An organism that eats other organisms or organic matter.

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4
Q

Ganglion

A

A mass of nerve cells.

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5
Q

Gut

A

The digestive tract.

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6
Q

Coelom

A

A body cavity that contains the internal organs.

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7
Q

Bilateral Symmetry

A

The two sides of its body mirror each other. It has equal right and left sides. Most complex animals.

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8
Q

Radial Symmetry

A

The body is organized around the center, like the spokes of a wheel.

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9
Q

Asymmetry

A

Its body is organized around the center. Most simple animals.

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10
Q

Sponges

A

Simple aquatic animals with dense, yet porous, skeletons.

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11
Q

Cnidarians

A

any member of the phylum Cnidaria a group made up of more than 9,000 living species.

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12
Q

Flatworms

A

a group of soft-bodied, usually much flattened invertebrates.

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13
Q

Roundworms

A

parasitic worms that comprise the phylum nematoda.

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14
Q

Mollusks

A

any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

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15
Q

Open circulatory system

A

A circulatory system in which the circulatory fluid is not contained entirely within vessels.

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16
Q

Closed circulatory system

A

A circulatory system in which the heart circulates blood through a network of blood vessels that form a closed loop.