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Brett Vazquez1
Blume Ch. 13.2
| Question | Answer |
|---|---|
| What does annelids mean? | "little rings" |
| What are setae? | bristle like structures on the outside of each body segment, they help move and "sense" the enviorment |
| What type of symmetry do segmented worms have? | bilateral symmetry |
| Segmented worms have 2 body openings, what is the posterior opening called | the anus |
| Name 2 examples of segmented worms | earthworms, marine worms, and leeches |
| What is the crop used for? | It is a sac used for storage |
| What muscular structure located behind the crop grinds soil to bits of organic matter | the gizzard |
| What are castings? | waste that piles up at the openings of earthworm burrows |
| True or false, the earthworm has an open circulatory system | false |
| What is the blood vessel on the top of its body called | the dorsal vessel |
| What is the blood vessel on the bottom of its body called | the ventral vessel |
| Do earthworms have gills or lungs? | Neither. They exchange oxygen and carbon dioxide through their skin |
| How do earthworms reproduce? | They are hermaphrodites which means the produce both sperm and eggs but they cannot fertilize themselves |
| How many species of marine worms are there? | More than 8,000 |
| True or false, some marine worms can produce their own light | true |
Created by:
bvazquez
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