Classes of Phylum Chordata Flashcards
What are the five main classes of Phylum Chordata?
Mammalia, Reptilia, Amphibia, Aves, and Fish
What’s unique about the classification of fish?
It is no longer a normal, distinct class; scientists have broken it into three super-classes. “Fish” is a general category, not a specific class anymore
What are the main characteristics of mammals (Class Mammalia)?
Hair/Fur, endothermic vertebrates, give birth to live offspring (viviparous), provide milk to offspring through mammary glands, possess a diaphragm. four-chambered hearts, skin glands, different types of teeth, and one jawbone.
How many orders are there in Class Mammalia?
About 27
What’s the difference between marsupials and placental mammals?
Placental mammal offspring are born fully mature; marsupials carry their freshly born offspring in pouches until they are ready to function on their own.
Which order of Class Mammalia lays eggs?
Monotremata (duck-billed playpus and two types of spiney anteater)
Which order of Class Mammalia contains the orca whale?
Cetacean
Which order of Class Mammalia contains the manatee?
Sirenia
Which order of Class Mammalia contains rabbits and hares?
Lagomorpha
Which order of Class Mammalia contains rats and mice?
Rodentia
Which order of Class Mammalia contains moles?
Insectivora
Which order of Class Mammalia contains lions and tigers?
Carnivora
Which order of Class Mammalia contains sloths and anteaters?
Edentata
Which order of Class Mammalia contains bats?
Chiroptera
Which order of Class Mammalia contains us?
Primates
What are the main characteristics of Class Reptilia?
Ectothermic vertebrates, have rough, dry, overlapping scales and no skin glands, are oviparous (lay eggs), their eggs have an amniote (leathery protective coating), move in a creeping or burrowing manner, breathe with lungs, have a four section body, and four-chambered hearts
What’s the difference between internal and external fertilization?
Internal fertilization: when the male of the species provides his genetic material to the egg while it’s inside of the female.
external fertilization: when the male provides his genetic material after the female lays the egg