Animal Characteristics
Animals obtain nutrients by ingesting their food, making them this type of organism.
What are heterotrophs?
This is the most basal animal phylum, known for its lack of true tissues.
What is Porifera (sponges)?
Animals with this type of symmetry have a distinct front and back, as well as left and right sides.
What is bilateral symmetry?
Directed and purposeful movement
What is taxis?
What all animals have in common.
What is multicellularity?
What is a blastula stage of development?
What is heterotrophy?
This animal tissue type provides support and structure. It includes blood and bone.
What is connective tissue?
This explosion of animal diversity occurred about 541 million years ago.
What is the Cambrian explosion?
The body cavity in animals, which is completely lined by mesoderm, is called this.
What is a coelom?
a rapid learning process in young animals where they form a strong attachment to the first moving object they see, often their mother, during a critical period early in life.
What is imprinting?
This phylum includes animals known for their stinging cells, called cnidocytes.
What is Cnidaria?
The formation of this embryonic stage involves cells moving to form different layers.
What is gastrulation?
Humans belong to this clade characterized by having a notochord at some stage in development.
What is Chordata?
The 3 layers of a triploblastic gastrula
Endoderm, Ectoderm, and mesoderm
Form of communication that uses pheromones and scent.
What is chemical communication?
This phylum includes flatworms, which are known for their dorsoventrally flattened bodies.
What is Platyhelminthes?
an animal that uses its environment to regulate its temperature.
What is a poikilotherm?
Two phyla that have radial symmetry
What are cnidarians and echinoderms?
The type of embryonic development of chordates and echinoderms
What are deuterostomes?
When an individual acts to benefit another at a cost to itself
What us altruism?
This phylum includes segmented worms, such as earthworms and leeches.
What is Annelida?
The type of protist animals likely arose from
Choanoflagellates
This group includes animals that undergo molting, such as arthropods and nematodes.
What is Ecdysozoa?
This term refers to the three layers formed during early embryonic development in animals.
What are germ layers?
This learning process creates a conditioned response through associations between an unconditioned stimulus and a neutral stimulus.
What is classical conditioning?
This phylum includes animals with a muscular foot, a visceral mass, and a mantle.
What is Mollusca?