Test 6- Unsegmented Worms

Question 1

Are part of phylum __

Answer 1

Platyhelimenthes

Question 2

They are ____ meaning ___

Answer 2

No body cavity

Question 3

They live in ___ and ___

Answer 3

Salt and freshwater

Question 4

There is __ species known

Answer 4

14,500

Question 5

They are ___ symmetry

Answer 5

Bilateral symmetry

Question 6

They have __ nervous system with ____ at head end

Answer 6

Bilateral, cephilization

Question 7

Species exhibit __ sensitive to light

Answer 7

Eyespot

Question 8

Some posses a ____ cavity and primitive ___ systems

Answer 8

Gastro vascular

Organs

Question 9

Do not have ___ or _ systemic

Answer 9

Circulatory

Respiratory

Question 10

Respire thru __

*through body surface

Answer 10

Diffusion

Question 11

They are ___

Answer 11

Hermaphroditic

Question 12

Planaria are aka as____

Answer 12

Free living flatworms

Question 13

Planaria move by beating __ and ___ on ____

Answer 13

Beating cilia and gliding on a film of mucus

Question 14

Planaria are __ to __ in size

Answer 14

3-12mm

Question 15

Planaria have a ___ opening to their stomachs in the middle of their body

Answer 15

Single

Question 16

Eyespots are aka as ___

Answer 16

Ocelli

Question 17

Planaria posses __ eyespots that are sensitive to light

Answer 17

2

Question 18

Planaria are ____

*__vores

Answer 18

Carnivores

Question 19

Planaria reproduce ____ and is capable of regeneration

Answer 19

Asexually

Question 20

They feed on __ or ___ moving organism

Answer 20

Dead, slow moving

Question 21

Pharynx is a ___

Answer 21

Tube like muscular organ that a planarian extends from its mouth to feet

Question 22

Enzymes digest the food ___ the animals body

Answer 22

Outside

Question 23

Cells lining the digestive tract obtain food by __ and __

Answer 23

Diffusion and phagocytosis

Question 24

Osmosis is ___

Answer 24

Diffusion of H2O

Question 25

Animal cels have a high ___ compared to freshwater organisms

Answer 25

Solute

Question 26

Planaria’s ____ system pumps out excess into the ___

Answer 26

Excretory

Environment

Question 27

During sexual reproduction flatworms exchange ____

Answer 27

Sperms

Question 28

Zygotes are released into the ___ to hatch

Answer 28

Water

Question 29

Planarians can reproduce asexually ____ pieces

Answer 29

Regenerating.

Question 30

What are the 2 types of tape worms

Answer 30

Pork tapeworm (taenia solium)

Beef tapeworm (taenia saginata)

Question 31

Give 2 characteristic of pork tape worms

Answer 31

Insects pig and humans

Flat and long which maximize the absorption of nutrients from host

Question 32

Give 2 symptoms of beef tapeworms

Answer 32

Diarrhea

Lost of appetite

Question 33

Roundworms have _____ which help them have a complete ___ way digestive tract

Answer 33

Pseudo coelomate

One

Question 34

In round worms the sexes are ___

Answer 34

Dioecious

Question 35

In round worms bodies are ___

Answer 35

Unsegmented

Question 36

In roundworms the epidermis secretes a cuticle made outta ___ to keep it from drying out

Answer 36

Collagen

Question 37

Roundworms contain many ___ and ___ forms/species

Answer 37

Parasitic

Free living

Question 38

Round worms are phylum ___

Answer 38

Nematoda

Question 39

Nematodes ecological roles includ

*2

Answer 39

Decomposers

Important to the chain of energy production and matter recycling of the earth

Question 40

Negative effects of parasitic nematodes *2

Answer 40

Causes crop death

Invade intestine of many animals leading to sickness

Question 41

Name 2 types of nematodes and where they infect

Answer 41

Whipworms- human large intestines causing trichinosis

Hookworms- invade small intestine of dogs, cats, and human sucking blood viciously