Which of the following belong to the phylum arthropoda and which belong to the class arachnida

Does this organism (crab) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does this organism (lobster) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does this organism (snail) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does this organism (flea) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does this organism (grasshopper) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does this organism (Crucifix spider) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does this organism (dragon fly) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

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Does this organism (scorpion) belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Explain why this belongs to a totally new class.

Does this organism belong to the phylum arthropoda? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Does it belong to the class arachnida? yes no

Why/why not?Give three reasons
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs
It has jointed legs It has a segmented body It has two body segments It has wings It has no wings It has a hard exoskeleton It does not have an exoskeleton It has more than two pairs of legs It has fangs It has no fangs

Click to see a larger view