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Annelids
Mollusks
Earthworms
Gastropods and Cephalopods
How many species?
100
Apart from leeches and earthworms, this type of ringed worm is the most common type of annelid.
What are Ragworms?
100
Textbooks often use a picture of a ___ in order to illustrate a Mollusk.
What is a generic Mollusk?
100
The largest known Earthworm is ___ feet long.
What is 9 feet?
100
The smallest known Gastropod is this large.
What is 5 millimeters?
100
There are ___ many Annelid species.
What is 17,000?
200
Annelids can be distinguished by ____, which usually appears in the form of a ring on the outside of their bodies.
What is external segmentation?
200
Mollusks almost always have a broad, muscular, ___, though it doesn't always serve that function.
What is a foot?
200
Earthworms are ___, a Latin term that comes from a myth about a man and a woman that fused together to form one being.
What are hermaphrodites?
200
"Gastropod" means this in Latin.
What is "stomach foot"?
200
There are ___ many Earthworm species.
What is 2,500?
300
The ____, or front end, of an annelid, is often indistinguishable from its back end.
What is a prostomium?
300
Mollusks perform these three important functions from the mantle.
What are eating, breathing, and expelling waste?
300
Earthworms eat primarily dead animals and waste, which put them in this category of animals.
What are scavengers?
300
Cephalopods are some of the only mollusks to be ___.
What are carnivores?
300
There are ___ many Bivalve species.
What is 20,000?
400
Another way that Annelids can be distinguished is via dissecting them, which reveals their ____.
What are repetitive organs?
400
Mollusks always have two pair of these, stretching throughout their body.
What are main nerves?
400
An earthworm usually has ___ many hearts.
What is five?
400
Cephalopod means in Latin "Head foot." Despite this name, their muscular feet instead evolved into their characteristic ___.
What are tentacles?
400
There are ___ many Gastropod species.
What is 70,000?
500
Annelids all have these, like those in plants, which keeps them waterproof.
What are cuticles?
500
The eyes of most Gastropods are called this.
What are eye spots?
500
The many species of Earthworms are grouped under this order.
What is Megadrilacea?
500
Gastropod reproduction usually involves these constructs.
What are love darts?
500
There are ___ many Cephalopod species.
What is 900?