Test 6- Segmented Worms

Question 1

Annelus means ___

Answer 1

Little rings

Question 2

Segmentsted worms have ____, ___ and ___ system

Answer 2

Circulatory, digestive and excretory

Question 3

They have a true ___

Answer 3

Coelom

Question 4

Coelom is ____

Answer 4

Body cavity that allows one to have true organ system and muscular layers

Question 5

Posses complex ____ and ___ system

Answer 5

Digestive and circulatory

Question 6

They have defined _____and ____ systems

Answer 6

Nervous, excretory

Question 7

They have no developed ___ systems

Answer 7

Respiratory

Question 8

They respire by ___

Answer 8

Deffusion

Question 9

They contain a ___ to hold ___

Answer 9

Cuticle , moisture

Question 10

Segmented into a sequence of department by ___

Answer 10

Septa

Question 11

Segments are marked by rings called ___

Answer 11

Annuli

Question 12

Reproduce asexually and ___ by ____

Answer 12

Sexually, regeneration

Question 13

They are hernahyoditic with _____ fertilization

Hernahyoditic meaning ____

Answer 13

Cross fertilization

Having both sex parts

Question 14

Are found in __, ____ and __ environment

Answer 14

Terrestrial, freshwater and marine environment

Question 15

They range in size for less than ____ to over ___

Example: ____

Answer 15

1mm to over 3 meters

Example : steep tube worm

Question 16

Digestive system is a ___ tube including a ___ and ____ with specialization of ___ organs

Answer 16

One way tube

Mouth and Anus

Digestive

Question 17

They have a ___ circulatory system

Answer 17

Closed

Question 18

They have ___ blood vessels that run the length of the worm

Answer 18

2

Question 19

Blood is pumped thru the ___ and ___ blood vessels by __ hearts

Answer 19

Dorsal , ventral , 5

Question 20

_____ is in the blood to carry O2

Answer 20

Hemoglobin

Question 21

Excretory system includes____

Answer 21

Nephridia

Question 22

Nephiridia is _____ kidneys which eliminate ___

Answer 22

Primitive, waste from the blood

Question 23

Nervous system includes ___

With a primitive __ and ____

Answer 23

Cephalization with a primitive Brain and ventral nerve cord

Question 24

They have no defined sensory ____

Answer 24

Organs

Question 25

Although Earthworms are hermaphroditic they still ___ to mix their gametes

Answer 25

Copulate

Question 26

Earthworms are Alamo capable of regrowing ___ segments in their body

Answer 26

Amputated

Question 27

Earthworm contains \_\_ major forum of muscles used in locomotion 
Which includes \_\_\_\_
*describe 
And \_\_\_\_\_
*describe

Answer 27

2,

Longitudinal muscles - contract to make work shorter

Circular muscles- make worm thinner

Question 28

Ecological roles of Annelids *3

Answer 28

Helps to cycle nutrients and minerals thru souls thru their poops

Burrowing and keeping soil
structure open

Acts as composers and helping to create dead organic matter into fertile soil