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madeline freeman Q4
mmf Q4 animals worms+flatworms
| Question | Answer |
|---|---|
| what are the three groups of worms? | round worms, flat worms, and segmented worms. |
| what kind of bodies do flat worms have? | flat bodies |
| what phylum are they? | phylum platyhelminth |
| how many tissue layers do they have and what are their names? | three, ectoderm-outer, endoderm-inner, and mesoderm-middle |
| does it have a respiration system? | no formal system, takes in oxygen |
| does it have a circulatory system? | no formal system, gastrovascular cavity |
| is it the simplest or most complex worm? | simplest |
| what kind of worm are they? | free-living or parasitic |
| what are examples? | tapeworms or fluke-worms |
| how many species? | 20,000 |
| where do the free living ones live and what are they like? | they live in water and are small |
| what are the parasitic like? | they live off their host and can be harmful |
| what is their muscular/skeletal system like? | no skeleton. they have tiny bristles called cilia to move. 2 muscle layers and 3 tissue/cell layers. beginning of a head region |
| what is their digestion system? | has one hole where they take in food and remove waste |
| what is their nervous system? | simple system with 2 nerve chords down their sides. 2 simple brains, ganglia, and 2 eyespots that detect light |
| how do they reproduce? | asexually, splits in two |
| what's their appearance? | thin, flat, can be small or long |
| are worms vertebrates or invertebrates? | invertebrates |
| what happens if a worm gets split up/ cut in half? | it can regenerate itself |
Created by:
madelinefreeman
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