In addition to a soft body, mollusks have this thin layer of tissue that covers its internal organs.
What is the mantle?
100
No matter what gastropods eat, they all use this organ, a flexibile ribbon of tiny teeth.
What is a radula?
100
This is the internal system of fluid-filled tubes found in echinoderms.
What is the water vascular system?
100
This is the waxy waterproof covering of an arthropod.
What is the exoskeleton?
100
Butterfly larva develop into adults through this process.
What is by complete metamorphosis?
200
Most groups of mollusks have this type of circulatory system.
What is an open circulatory system?
200
Which of the following is NOT a characteristic of mollusks?
a. They have a mantle.
b. They are invertebrates.
c. They have radial symmetry.
d. They have gills.
What is they have radial symmetry.?
200
These line the underside of a sea star's arms and act like tiny suction cups.
What are tube feet?
200
Spiders, ticks, and scorpions are all
What are arthropods?
200
The wings of an insect are attached to this body section.
What is the thorax?
300
A squid is an example of a(n)
What are cephalopods?
300
Bivalves obtain food in this way.
What is filter feeding, straining tiny animals and plants from the water?
300
These are the three characteristics of all echinoderms.
What is being invertebrates, having an internal skeleton, and a system of fluid-filled tubes called a water vascular system?
300
As a crab grows in size its exoskeleton cannot expand, therefore this process occurs.
What is molting?
300
All arachnids share this type of body structure.
What is having two body sections, four pairs of legs, and no antennae?
400
This group of mollusks do not move quickly and most larva swim or float through the water.
What are bivalves?
400
Which of the following is not a way in which mollusks gather food?
a. using tube feet to pry apart bivalves
b. using tentacles to detect and grab prey
c. using radulas to collect food
d. using gills to collect food
What is using tube feet to pry apart bivalves?
400
The skin of most echinoderms is supported by a spiny internal skeleton, called a(n) _________________.
What is an endoskeleton?
400
An arthropod has these three body sections.
What is the head, thorax and the abdomen?
400
Crustaceans are the only arthropods that have
What is two pairs of antennae?
500
These mollusks have excellent vision and large brains that enable them to remember what has been learned.
What are cephalopods?
500
Biologists classify mollusks into groups based on these four (4)physical characteristics.
What is the presence of a shell, the type of shell, the type of of foot, and the type of nervous system?
500
Echinoderms posess this type of symmetry.
What is radial symmetry?
500
These six (6) characteristics of arthropods are shared by ALL arthropods:
What is invertebrates, an external skeleton, a segmented body, jointed appendages, bilateral symmetry, and an open circulatory system?
500
These are the stages of an insect's complete metamorphosis.