Module 11 Vocabulary Flashcards Preview

Exploring Creation with Biology > Module 11 Vocabulary > Flashcards

Flashcards in Module 11 Vocabulary Deck (31)
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1

Invertebrates

Animals that lack a backbone.

2

Vertebrates

Animals that posses a backbone.

3

Spherical Symmetry

An organism possesses spherical symmetry if it can be cut into two identical halves by any cut that runs through the organism's center.

4

Radial Symmetry

An organism possesses radial symmetry if it can be cut into two identical halves by any longitudinal cut through its center.

5

Bilateral Symmetry

An organism possesses bilateral symmetry if it can only be cut into two identical halves by a single longitudinal cut along its center which divides it into right and left halves.

6

Epidermis

An outer layer of cells designed to provide protection.

7

Mesenchyme

The jellylike substance that seperates the epidermis from the inner cells in a sponge.

8

Collar Cells

Flagellated cells that push water through a sponge.

9

Amoebocytes

Cells that move using pseudopods and perform different functions in different animals.

10

Gemmule

A cluster of cells enclosed in a hard, spicule-reinforced shell.

11

Polyp

The sessile, tubular form of a cnidarian with a mouth and tenctacles at one end and a basal disk at the other.

12

Medusa

A free-swimming cnidarian with a bell-shaped body and tentacles.

13

Epithelium

Animal tissue consiting of one or more layers of cells that have only one free surface, because the other surface adheres to a membrane or other substance.

14

Mesoglea

The jellylike substance that separates the epithelial cells in a cnidarian.

15

Nematocysts

Small capsules that contain a toxin which is injected into prey or predators.

16

Testes

Organs that produce sperm.

17

Ovaries

Organs that produce eggs.

18

Anterior End

The end of an animal that contains its head.

19

Posterior End

The end of an animal that contains its tail.

20

Circulatory System

A system designed to transport food and other necessary substances throughout a creature's body.

21

Nervous System

A system of sensitive cells that respond to stimuli such as sound, touch, and taste.

22

Ganglia

Masses of nerve cell bodies.

23

Hermaphroditic

Possesing both male and female reproductive organs.

24

Regeneration

The ability to regrow a missing part of the body.

25

Mantle

A sheath of tissue that encloses the vital organs of a mollusk, makes the mollusk's shell and perfomrs respiration.

26

Shell

A tough, multilayered structure secreted by the mantle, generally used for protection, but sometimes for body support.

27

Visceral Hump

A hump that contain a mollusk's heart, digestive and excretiory organs.

28

Foot

A muscular organ that is used for locomotion and takes a variety of forms depending on the animal.

29

Radula

An organ covered with teeth that mollusks use to scrape food into their mouths.

30

Univalve

An organism with a single shell.