Invertebrates Of Kingdom Animalia Chap. #11

Question 1

What is an Invertebrate?

Answer 1

Animals that lack a backbone.

Question 2

What is a vertebrate?

Answer 2

Animals that possess a backbone.

Question 3

What is Spherical symmetry?

Answer 3

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

Question 4

What is radial symmetry?

Answer 4

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

Question 5

What is bilateral symmetry?

Answer 5

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

Question 6

What is an epidermis?

Answer 6

And outer layer of cells designed to provide protection.

Question 7

What is a mesenchyme?

Answer 7

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

Question 8

What are collar cells?

Answer 8

Flagellated cells that push water through a sponge.

Question 9

What are amebocytes?

Answer 9

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

Question 10

What is a Gemmule?

Answer 10

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

Question 11

What is a Polyp?

Answer 11

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

Question 12

What is a Medusa?

Answer 12

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

Question 12

What is a Mesoglea?

Answer 12

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

Question 13

What is a Epithelium?

Answer 13

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

Question 14

What is Nematocysts?

Answer 14

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

Question 15

What are Testes?

Answer 15

Organs that produce sperm.

Question 16

What are Ovaries?

Answer 16

Organs that produce eggs.

Question 17

What is the anterior end?

Answer 17

The end of an animal that contains its head.

Question 18

What is the posterior end?

Answer 18

The end of an animal that contains its tail.

Question 19

What is the Circulatory system?

Answer 19

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

Question 20

What is the nervous system?

Answer 20

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

Question 21

What is a Ganglia?

Answer 21

Masses of nerve cell bodies.

Question 22

What does hermaphroditic mean?

Answer 22

Possessing both male and female reproductive organs.

Question 23

What are the seminal vesicles?

Answer 23

Organs that carry the worm’s sperm.

Question 24

What are seminal receptacles?

Answer 24

Organs in a worm’s body that are used to hold other worms sperm.

Question 25

What is a mantle?

Answer 25

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

Question 26

What is a shell?

Answer 26

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

Question 27

What is a Visceral Hump?

Answer 27

A hump that contains a mollusk’s heart, digestive, and excretory organs.

Question 28

What is a foot?

Answer 28

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

Question 29

What is a Univalve?

Answer 29

An organism with a single shell.

Question 30

What is a Radula?

Answer 30

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

Question 31

What is a Bivalve?

Answer 31

an organism with two shells.