Blume ch.13.2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What shape are annelids? | tube shaped bodies that are divided into many segments
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| What kind of symmetry do Segmented worms have? | bilateral
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| What holds the two organs? | Body cavity
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| What are the two openings? | mouth & anus
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| Where can segmented worms live? | freshwater,
salt water, & moist soil
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| Where does it take the soil in? | it's mouth
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| What is the crop? | sac used for storage
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| What is a gizzard? | a muscular structure which grinds the soil and the bits of organic mater.
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| Where is the organic matter broken down & nutrients are absorbed by the blood? | Intestines
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| Where does the waste leave the worm? | Anus
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| What helps fertilize the soil? | casting
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| What does taking in of soil to get food helps provide? | spaces for air and water to flow through the soil and mix the soil
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| How many blood vessels do the worms have? | 2
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| Where are the two blood vessels located? | one along the top
and one along the
bottom
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| What pumps the blood? | 5 heart-like “aortic arches”
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| Where does oxygen and carbon dioxide exchange through? | Their skin.
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| What is the skin covered with? | Thin, watery mucus
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| What do these worms not have? | gills or lungs
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| WHere is their brain located? | In the front segment
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| What do the nerves respond to? | light, temperature, and moisture
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| What are earthworms? | hermaphrodites
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| What can it not do? | fertilize its own eggs
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| What can it make? | both sperms and eggs
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| What must the earthworm do to reproduce? | receive sperm from another earthworm
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| Marine worms are what? | Polychaetes
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| How do marine worms move? | float, burrow, build structures, or walk along the ocean floor
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| What can some marine worms do? | Produce their own light
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| What do marine worms have? | Segments
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| What does polychaete mean? | "many bristles"
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| What do free-swimming polychaetes have? | head with eyes, a tail and parapodia
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| What are leeches? | segmented worms
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| What do leeches feed on? | Blood of other animals
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| What do leeches have at the end of their body? | A sucker
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