Ccbc Co-Op Bio Chapter 15-16 Invertebrates: Set 2

Front 1

Caphalizaton:

Back 1

The presence of a "head" region, Usually containing nerve tissue and supplied with sensory organs.

Front 2

Planarians:

Back 2

These small flatworms commonly inhabit freshwater lakes and streams and may vary in color from black to brown or brown to white

Front 3

Gastroderm:

Back 3

The layer lining the interior of the animal, primarily perform digestion.

Front 4

Mesoderm -

Back 4

the middle germ layer in an embryo.

Front 5

Pharynx - .

Back 5

the portion of the digestive tract that connects the mouth cavity and the esophagus.

Front 6

Flame cells

Back 6

cells that posses tufts of cilia.

Front 7

Tegument

Back 7

a protective body covering

Front 8

Scolex

Back 8

the interior end of a tapeworm

Front 9

Proglottids

Back 9

a segment of a tapeworm's body

Front 10

Intermediate Host -

Back 10

An animal that temporarily harbors an immature form of a parasite.

Front 11

round worms -

Back 11

Tiny cylindrical worms usually less than 2.5 cm (1 in.) long. Although hey lack in size the make up in sheer numbers. These tiny animals inhabit every enviroent and every living thing. Phylum nematoda.

Front 12

earth worm -

Back 12

The earthworm belongs to the phylum Annelida. Its body is divided into similar rings or segments. This segmentation is external and internal.
Internally, a thin membrane, or septum, separates each segment of the body. Along the worm's ventral and lateral surfaces are setae. It feeds on vegetation, refuse, and decayed animal matter in the soil. It has a closed circulatory system, as well a pair of ganglia(nerve system). It reproduces sexually with sperm and egg.

Front 13

Septum(pl., septa) -

Back 13

A wall that separates the inner divisions of a segemented worm.

Front 14

Clitellum

Back 14

a barrel-shaped swelling usually covering segments 32 through 37

Front 15

Prostomium

Back 15

a liplike structure above the mouth of an earthworm

Front 16

Setae

Back 16

tiny bristles, four pairs to each segment that can be retracted into the worm's body

Front 17

Crop

Back 17

where the food-laden soil is stored temporarily

Front 18

Gizzard

Back 18

a similar structure in the foregut of arthropods and several other invertebrates, often lined with chitin and small teeth.

Front 19

Aortic arches

Back 19

a series of six paired embryological vascular structures which give rise to several major arteries

Front 20

Casts

Back 20

To shed; molt.

Front 21

Nephridia

Back 21

the excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface

Front 22

Mollusks-

Back 22

Any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft body, a mantle, and a protective shell and including the edible shellfish and the snails

Front 23

Mantle-

Back 23

The sheath of tissue that covers the body of a mollusk; also secretes the shell.

Front 24

Shell-

Back 24

the tough multilayered structure secreted by the mantle as a means of protection or body support.

Front 25

Visceral hump-

Back 25

The portion of a mollusk's body that contains internal organs.

Front 26

Foot

Back 26

a fleshy muscular organ that is used for locomotion and assumes a variety of forms, depending on the animal

Front 27

Radula

Back 27

a small organ covered with many tiny teeth that scrapes up food particles and draws them into the mollusks mouth

Front 28

Echinoderms

Back 28

Marine animals ranging from the sea urchin to the star fish. they are also characterized by there unique water vascular system.

Front 29

water-vascular system

Back 29

a series of canals and tubules that are used for locomotion and food capture in the epidermis