Question | Answer |
What is the meaning of Annelids? | "Little rings" |
What are some attributes of Annelids? | They have tube shaped bodies divided into many segments and have setae. |
What is a worm's symmetry? | Bilateral |
How many openings does a worm have? What are they. | 2; the mouth and the anus |
Where does the soil go after it enters the worm's mouth? | The crop "storage sack" |
What grinds up the soil? | The gizzard |
Where does it pass to next? | The intestines |
Finally, the waste exits through the _____. | anus |
T or F. This process is horrible for the worm. | False |
The waste that piles up are called? | Castings |
How do castings help attribute to the soil? | They fertilize the soil. |
What is a worms circulatory system? | A closed circulatory system |
How many blood vessels does a worm have? Where are they located? | 2; along the top and along the bottom |
What do the aortic arches do? How many of them are there? | They pump blood; there are 5 of them. |
______ vessels go into each body segment. | Smaller |
T or F. Worms don't have gills or lungs. | True |
Where is O2 and CO2 exchanged? | Through the worms skin. |
What is the texture of a worms skin? | It is covered with a watery mucus. |
If you touch the worms with dry hands, you could? | Suffocate them |
Where is the worms brain? | In the front segment. |
Nerves in each segment join to form the main nerve cord
that connects to the _____. | Brain |
What do worms respond to? | Light, temperature, and moisture. |
Earthworms are _______. | Hermaphrodites |
Why are worms like sponges in a way? | They can lay eggs and produce sperm, but they can't fertilize their own eggs. |
What does it have to do to fertilize? | It must receive sperm from another worm. |
What is the name of marine worms? | Polychaetes |
What is the estimation of their species number? | About 8000+ |
What are some things that they do? | They float, burrow, build
structures, or walk along
the ocean floor. |
Fun fact about marine worms. | Some can produce their own light. |
How deep can some marine worms live? | 540m |
What is one thing that makes marine worms like earthworms? | They have body segments. |
Their name "Polychaetes" means... | Many bristles |
What does the "Christmas Tree" do with it's tentacles. | It exchanges O2 and CO2 as well as gather food. |
Free-Swimming Polychaetes have... | a head with eyes, a tail, and parapodia |
What are parapodia? | These are paired, fleshy
outgrowths on each
segment that help it
move and get food. |