Ccbc Co-Op Bio Chapter 15-16 Invertebrates: Set 1

Front 1

Zoology:

Back 1

the study of the kingdom Animalia.

Front 2

Motile:

Back 2

Moving or having the power to move spontaneously.

Front 3

Sessile:

Back 3

attached to something;
nonmotile

Front 4

Exoskeleton:

Back 4

external plates that protect and support

Front 5

Endoskeleton:

Back 5

internal skeleton;
a more flexible, lighter (than the exoskeleton) internal system made up of bones or cartilage

Front 6

Closed circulatory system:

Back 6

blood is confined to blood vessels

Front 7

Open Circulatory System -

Back 7

blood flows into tissue; it is not confined to vessels

Front 8

Excretion -

Back 8

the elimination of wastes;
organs can include flame cells. Malpighian tubules, and kidneys

Front 9

Ganglion -

Back 9

a mass of nerve tissue

Front 10

Budding -

Back 10

asexual;
common among invertebrates;
portions from the parent form a new organism.

Front 11

Regeneration -

Back 11

asexual;
a small piece of an animal grows into a complete new adult

Front 12

Hermaphroditic -

Back 12

an organism that has both male and female reproductive organs.

Front 13

larval stages:

Back 13

intermediate stages of development that are usually different from the adult;
*Characteristic of some animals

Front 14

spherical symmetry:

Back 14

the body has the shape of a sphere and the parts are arranged concentrically around or radiate from the centre of the sphere. Such an animal has no ends or sides, and any plane passing through the centre will divide the animal into equivalent halves.

Front 15

embryonic stages:

Back 15

-the early stages of development in which the fertilized zygote begins its development into an adult organism
*Characteristic of all animals

Front 16

radial symmetry:

Back 16

a basic body plan in which the organism can be divided into similar halves by passing a plane at any angle along a central axis, characteristic of sessile and bottom-dwelling animals, as the sea anemone and starfish.

Front 17

bilateral symmetry:

Back 17

can be divided into equal halves only by a cut which passes longitudinally and divides the animal into right and left sides

Front 18

invertebrates:

Back 18

animals without backbones;
95% of all animals

Front 19

Vertebrates -

Back 19

animals with backbones;
5% of all animals

Front 20

Cephalic -

Back 20

concerning the head

Front 21

Caudal-

Back 21

concerning the tail

Front 22

Anterir-

Back 22

toward the front; forward

Front 23

Posterior-

Back 23

toward the rear; farther back

Front 24

Dorsal -

Back 24

on or near the upper surface; back

Front 25

Ventral

Back 25

- on or near the lower surface: front

Front 26

Lateral

Back 26

-on or toward the side

Front 27

Medial

Back 27

-on or toward the middle

Front 28

Midline

Back 28

-divides into right and left

Front 29

Transverse

Back 29

-crosses perpendicular to midline

Front 30

Sponges

Back 30

-unobtrusive organisms found mainly in marine habitats

Front 31

Incurrent pores

Back 31

-the openings in which water first enters a sponge

Front 32

Excurrent pore or osculum

Back 32

-an excretory structure in the living sponge

Front 33

Epidermis

Back 33

-the outer layer of skin covering the exterior body

Front 34

Mesenchyme

Back 34

-mesodermal tissue that forms connective tissue and blood and smooth muscles

Front 35

Amoebocytes

Back 35

-a mobile cell in the body of invertabrates

Front 36

Collar cells

Back 36

-any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum

Front 37

Spicules-

Back 37

Sharp, pointed, supporting structures in sponges; composed of silicon or calcium compounds.

Front 38

Gemmules-

Back 38

In a sponge, internal dormant cluster of cells encased in a tough spicule-reinforced covering

Front 39

Polyp-

Back 39

Is a cup-shaped tubular cnidarians with a mouth and tentacles at one end and a basal disc for attachment at the other.

Front 40

Medusa-

Back 40

The free-swimming umbrella-shaped stage in the life cycle of cnidarians; reproduces sexually.

Front 41

Hydra –

Back 41

A small fresh water cnidarians commonly found in quiet lakes or ponds.

Front 42

Tentacle-

Back 42

long and movable, surround the mouth. The hydra uses tentacles to catch food.

Front 43

Gastro vascular cavity

Back 43

-the internal cavity of cnidarians where digestion and food circulation occurs

Front 44

Gastrodermis-

Back 44

the inner cellular layer of the digestive tract of cnidarians

Front 45

Mesoglea-

Back 45

the jelly like layer found between the ectoderm and endoderm cnidarians

Front 46

Basal disc-

Back 46

the flattened structure at the lower end of certain cnidarians; used for attaching to objects or for locomotion

Front 47

Cnidoblasts-

Back 47

stinging cells located on the tentacles;
used by cnidarians for defiance

Front 48

Nematocysts-

Back 48

a stinging cell, characteristics of cnidarians, that contains poisonous barbs, coiled threads, or a sticky substance