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WORMS - part 1

QuestionAnswer
define bilateral symmetry.
define hermaphrodite.
define ploglattid.
define fluke.
define tegument.
how many species of worms exist? approximately 36,000
how long can giant tubeworms grow to be? 1.5 meters OR 5 feet
how long can giant earthworms of africa grow to be? 6 meters OR 20 feet
where do worms live? soil, freshwater & salt water
what kind of symmetry do worms display? bilateral symmetry
how are worms classified? based on their body shape
what are the 3 phyla of worms? 1. platyhelminthes 2. nematoda 3. annelida
what is platyhelminthes? flatworms
what is nematoda? roundworms
what is annelida? segmented worms
what does "platy" mean? (GREEK)- flat
what does "helminthes" mean? (GREEK)- worms
true or false: flatworms are the LEAST complex of all worms. true
are flatworms freeliving, parasitic, both, or neither? both
how many species of flatworms are there? approximately 13,000
what are flatworms size range? less than 1 mm to 15 m
do flatworms have a circulatory or respitory system? no
why do flatworms not need these systems? because each cell of their body is close to the animal's exterior
how do flatworms get oxygen and food molecules? through diffusion
the phylum platyhelminthes is divided into what 3 classes? 1. turbellaria 2. trematoda 3. cestoda
how many species are in class turbellaria? approximately 300
the majority of organisms in this group are? freeliving marine flatworms
what is the most well known flatworm of class turbellaria? planarian
where are planarians often found? under stones in freshwater ponds and streams
in North America, planarians are usually? gray, brown, or black and are about 3-15 millimeters
what are planarians known for? their tremendous powers of regeneration
Created by: Lauren_Chambless
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