Invertebrate Animals Flashcards

1
Q

Vertebrates

A

An animal that has a backbone.

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2
Q

Invertebrates

A

An animal that does not have a backbone.

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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 track.

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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.

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8
Q

Radial Symmetry

A

Its body is organized around the center, like the spokes on a wheel.

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9
Q

Asymmetry

A

Its body is not organized around the center.

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10
Q

Sponges

A

They are multi-cellular organisms that have bodies full of pores and channels allowing water to circulate through them.

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11
Q

Cnidarians

A

Some kind of animal tat lives in the sea.

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12
Q

Flatworms

A

The flat worms, are a phylum of relatively simple bilateral, unsegmented, soft-bodied invertebrates.

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13
Q

Roundworms

A

The nematodes constitute the phylum Nematode. They are a diverse animal phylum inhabiting a broad range of environments.

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14
Q

Mollusks

A

Mollusca are the second largest phylum of invertebrate animals. The members are known as mollusks or mollusks.

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15
Q

Open circulatory system?

A

Open circulatory systems (evolved in crustaceans, insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.

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16
Q

Closed circulatory system?

A

Vertebrates, and a few invertebrates, have a closed circulatory system. Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.

17
Q

Annelid worms?

A

The annelids, also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.

18
Q

Exoskeleton?

A

An exoskeleton is the external skeleton that supports and protects an animal’s body, in contrast to the internal skeleton of, for example, a human. In usage, some of the larger kinds of exoskeletons are known as “shells”.

19
Q

Compound eye?

A

A compound eye is a visual organ found in arthropods such as insects and crustaceans. It may consist of thousands of ommatidia, which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color.

20
Q

Antenna?

A

one of a pair of slender, movable, segmented sensory organs on the head of insects, myriapods, and crustaceans — see insect illustration.

21
Q

Metamorphosis?

A

A change in the form and often habits of an animal during normal development after the embryonic stage. Metamorphosis includes, in insects, the transformation of a maggot into an adult fly and a caterpillar into a butterfly and, in amphibians, the changing of a tadpole into a frog.

22
Q

Endoskeleton?

A

an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.

23
Q

Water vascular system?

A

The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.