Aquatic
The phyla of sessile animals as adults, with no true tissues, asymmetrical, and aquatic
What are porifera? aka sponges
Most diverse group of arthropods
What are insects?
four limbed animal
What is tetrapod?
Birds exhibit hollow bones, feathers, keel shaped breastbone, efficient respiration, and a high metabolism for this trait
What is flight?
ectoderm, mesoderm, and endoderm
What are the three germ layers?
Phyla characterized by stinging cells that are used for defense and capturing prey. Includes jellyfish, corals, anemones, box jellies, hydra
What is Cnidarian?
Transitional animal linking dinosaurs to birds
What is Archaeopteryx?
Body heat is dependent on the environment
What are ectotherms?
This trait allowed for animals like sharks to exploit food sources previously unavailable
What are Jaws?
Group of arthropods that are nearly all aquatic
What is crustaceans?
A unique trait of the vertebrates lampreys and hagfish
What is jawless fish?
Lemurs, monkeys, apes, and humans are classified as
What are primates?
Sharks and rays make up __________________ fish
What are cartilaginous?
Platypus and Echidnas are monotremes which includes being mammals that do this
What is lay eggs?
Unique features of vertebrates includes
What are backbone and skull?
Sea stars, brittle stars, sea urchins, sand dollars, sea lilies, and sea cucumbers
What is phylum Echinodermata?
What is a pouch?
Arthropod skeletons are made up of
What is chitin?
In addition to having mammary glands, this is a unique trait of mammals
What is the presence of hair?
A characteristic of all chordates
What is have a notochord at some point in life cycle?
This evolutionary link was fossil evidence of an animal that was aquatic and terrestrial, connecting evolutionary evidence
What was Tiktaalik?
Since the Cambrian period there have been five
What are mass extinction events? (may be exhibiting signs of a sixth)
Method of feeding demonstrated by sponges
What is filter feeder?
This trait freed reptiles from their dependency on water for reproduction
What is the amniotic egg?
The sea otter is a top predator in it's ecosystem and has direct link to that ecosystems health making it this
What is a keystone species?