Invertebrate Animals Vocabulary Flashcards
Embryo
A plant or animal at an early stage of development.
Consumer
An organism that eats other organisms or organic matter.
Innate behavior
An inherited behavior that does not depend on the environment or experience.
Learned behavior
A behavior that has been learned from experience.
Territory
An area that is occupied by one animal or a group of animals that do not allow other members of the species to enter.
Hibernation
Hibernation is a state of minimal activity and metabolic depression. Hibernation is a seasonal thermometer characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most commonly occurs during winter months.
Estivation
Prolonged torpor or dormancy of an animal during a hot or dry period.
Circadian rhythm
A circadian rhythm is a natural, internal process that regulates the sleep.
Social behavior
The iteration between animals of the same species.
Communication
A transfer of a signal or message from one animal to another that results in some type of response.
Pheromone
A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species.
Invertebrate
An animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc
Ganglion
A structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
Gut
The gastrointestinal tract, is the tract from the mouth to the anus which includes all the organs of the digestive system in humans and other animals.
Coelom
The body cavity in metazoans, located between the intestinal canal and the body wall.
Open circulatory system
Open circulatory systems (evolved in insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells.
Closed circulatory system
Closed circulatory systems (evolved in echinoderms and vertebrates) have the blood closed at all times within vessels of different size and wall thickness.
Segment
Each of the parts into which something is or may be divided.
Exoskeletion
An exoskeleton is the external skeleton that supports and protects an animal’s body, in contrast to the internal skeleton of, for example, a human. In usage, some of the larger kinds of exoskeletons are known as “shells”
Compond eye
A compound eye is a visual organ found in arthropods such as insects and crustaceans.
Antenna
Either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods.
Metamorphosis
(In an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.
Endoskeleton
An internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
