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30 terms

Science: Worms: Worm Notes

flashcards from the science notes on worms
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What kind of bodies do worms have?
long, narrow bodies with no legs
What kind of cell organization do worms have?
tissues-organs-organ systems
What kind of reproduction do worms they use?
asexual and sexual
Worms can ____ lost body parts.
regenerate
What kind of environment do roundworms live in?
moist
What kind of bodies do roundworms have?
round bodies with pointed ends
Roundworms can be carnivores, _____, or _____.
herbivores; parasitic
Describe a roundworm's digestive system.
like a tube; open at both ends
Most flatworms are ____.
parasites
Flatworm's bodies are adapted to _____ food from their ____.
absorbing; host
Name an example of a non-parasitic flatworm.
Planarian
Where do planarians live?
in water
What do planarians feed on?
dead and decaying matter
Planarians use a feeding ____.
tube
Planarians can sense light and ____.
odors
A tapeworm attaches to the intestine using ___ and ____.
hooks and suckers
Name two examples of segmented worms.
earthworms and parasitic leeches
Segmented worms consist of bodies made from _____ _____.
linked segments
A ___ cord and ____ tube run the entire length of a segmented worm's body.
nerve; digestive
segmented worms have a ____ ____ system.
closed circulatory
What does having a closed circulatory system mean?
blood stays within tubes
Circulatory systems allow a worm to be ____ and more _____.
larger; active
How many pairs of hearts do earthworms have?
five
How many hearts do earthworms have?
ten
What do earthworms eat?
decaying plant and animal matter
How do earthworms take in oxygen?
through moisture on its skin
What do eathworms use to move in underground burrows?
bristles on skin
Earthworms are very ____ to the soil.
beneficial
What do earthworm's burrows allow to enter the ground?
water, oxygen, and plant roots
Earthworm's droppings ___ the soil.
fertilize