The belly side of an organism is called the ________ side.
ventral
100
This phylum of animals have exoskeletons, are bilateral, and have jointed appendages (includes insects).
Arthropods
100
An animal that has many canine teeth will most likely eat what type of food?
meat
200
Body symmetry with no definite shape is called __________________.
asymmetry
200
An organism that is dependent upon the temperature of their surroundings is a(n) _________________.
Ectotherm
200
How does a skate differ from a lamprey?
A skate has jaws, lamprey does not.
200
This phylum of animals are bilateral, have a coelom, two body openings, a muscular foot, and a mantle. It includes the octopus.
Mollusks
200
True or False: Monotremes lay eggs instead of giving birth to live young like other mammals.
True
300
What do we call an organism that has an endoskeleton and a backbone?
vertebrate
300
Type of symmetry where the right and left halves form a mirror image.
Bilateral
300
List one trait of an Echinoderm.
radial, coelum, endoskeleton (made of calcium carbonate), water vascular system, tube feet, spines used in locomotion
300
Which characteristics do annelids (earthworm) and arthropods (insects) share?
A. jointed appendages B. exoskeleton C. segmented D. tracheal tubes
C. segmented
300
List one trait of a bony fish.
Vertebrate, paired fins, swim bladder, scales, lateral line system
400
The layer of tissue that becomes the nervous tissue and skin is called the _________.
Ectoderm
400
A(n) _________________ is an organism that does not have a body cavity.
acoelomate
400
This phylum of animals have two cell layers, asymmetrical, and do not move (sessile).
Sponges (Porifera)
400
List three structures that are used by an amphibian species to exchange gas with the environment.
gills, lungs, skin
400
Birds and crocodiles have a common ancestor. This is believe because they both have a ____-chambered heart.
four (4)
500
Describe the difference between an exoskeleton and an endoskeleton.
exoskeleton: hard or tough outer covering that protects the soft tissues, shed as the animal grows
endoskeleton: internal skeleton that grows with the animal
500
List the three cell layers in order starting from the inner layer.
endoderm, mesoderm, ectoderm
500
What does it mean to be an invertebrate chordate?
no backbone (vertebrae), have a nerve chord
500
This phylum of animals have a pseudocoelom, a tube-like digestive system, two body openings, and some are parasitic.
Roundworms (Nematoda)
500
A scientist finds an amphibian with legs and a tail. Most likely the amphibian belongs to the order __________.