Phylum Cnidaria And Phylum Plathyhelminthes

Front 1

Unfetilized eggs have a

Back 1

Viewable nucleus

Front 2

Fertilized eggs are called

Back 2

Zygotes

Front 3

Union of male and female nuclei

Back 3

Fertilization

Front 4

What happens once the egg is fertilized?

Back 4

Cleavage

Front 5

2 --> 4 --> 8 --> 16, until a _______ forms.

Back 5

Ball called a morula

Front 6

A hollow ball of cells

Back 6

Blastula

Front 7

Cell of a blastula

Back 7

Blastomere

Front 8

Opening on a blastula

Back 8

Blastopore

Front 9

Blastopores becomes . . .

Back 9

Mouth or anus

Front 10

As it grows larger, a portion of the blastula flattens out, forming . . .

Back 10

Gastula

Front 11

Following the formation of the gastula, ______ occurs

Back 11

Invagination

Front 12

First life was

Back 12

Prokaryotic and marine

Front 13

Unicellular organisms gave rise to

Back 13

Metazoans

Front 14

Most primitive metazoans are

Back 14

Cnidaria

Front 15

Cnidarians have

Back 15

Stinging cells

Front 16

Stinging cells are called

Back 16

Cnidoblasts

Front 17

Inside the cnidoblasts are

Back 17

Poisonous threads called neumatocysts

Front 18

Mouth and anus are

Back 18

The same opening

Front 19

Some cnidarians have

Back 19

Tentacles

Front 20

Cnidarians are

Back 20

Diploblastic and have no true muscle

Front 21

Some can move slightly due to a muscle-like mass called . . .

Back 21

Mesaglea

Front 22

Cnidarians have two body shapes

Back 22

Polyp and medusa

Front 23

Polyp shape is

Back 23

Cylindrical and vase-shaped

Front 24

Medusa shape is

Back 24

Cup-shaped

Front 25

Many cnidarians are . . .

Back 25

Monecious (hemaphroditic)

Front 26

Form structures in the oceans where you can find most of your plants and animals

Back 26

Coral

Front 27

Some coral have _______, which is also found in shells of mollusks

Back 27

Calcium carbonate

Front 28

Everyday term for calcium carbonate

Back 28

Lime

Front 29

Platyhelminthes and all remaining phyla have

Back 29

Bilateral symmetry

Front 30

Flatworms

Back 30

Flat and ribbon-like

Front 31

Flatworms have a . . .

Back 31

Specialized cuticle for protection

Front 32

The most primitive flatworms are . . .

Back 32

Triproblastic

Front 33

Flatworms have . . .

Back 33

No body cavity

Front 34

A body cavity is called a

Back 34

Caelom

Front 35

Flatworms are

Back 35

Acaelomic

Front 36

Tapeworm head end has a ring of hooks called a

Back 36

Solex

Front 37

The solex is used to

Back 37

Hold on to the lining of the intestines

Front 38

Largest part of the tapeworm's body are numerous segments called . . .

Back 38

Proglottid

Front 39

The proglottid is where

Back 39

Male and female eggs are fertilized

Front 40

How do tapeworm eggs get to a new host?

Back 40

Parts of the tapeworm with eggs break off, are ingested, and the eggs hatch into another tapeworm.

Front 41

Round worms

Back 41

Nematoda

Front 42

Round worms are

Back 42

Triproblastic, eucaelomic

Front 43

Some round worms are

Back 43

Parasitic, such as the local pinworms

Front 44

Mollusca

Back 44

Triproblastic, Bilateral symmetry, eucalom

Front 45

Many mollusks have . . .

Back 45

A shell

Front 46

There are three classes of mollusks:

Back 46

Bivalvia, Gastrodopa, cephalapoda

Front 47

Examples of bivalvia are:

Back 47

Mollusks with two shells, such as clams

Front 48

Examples of gastropoda are:

Back 48

Snails

Front 49

Examples of cephalapoda are"

Back 49

Squids and octopi

Front 50

The scheme of classification used today was developed by . . .

Back 50

Carl von Linne, a Swedish botanist who worked in the 18th century.

Front 51

A category is called a . . .

Back 51

Taxa (Taxon pl.)