Invertebrates Flashcards
embryo
a plant or animal at an early stage of development
consumer
an organism that eats other organism or organic matter
innate behavior
an inherited behavior that does not depend on the environment or expierence
learned behavior
a behavior that has been learned from expierenced
territory
an area that is occupied by one animal or a group of animals that do not allow other animals
hibernation
a period of inactivity and lowered body temperature that some animals undergo in winter
estivation
a period on inactivity and lowered body temperature that some animals undergo in the summer
circadian rhythm
a biological daily cycle
social behavior
interaction between the same species of animals
communication
a transfer of a signal from one animal to another that results in some type of response.
pheromone
a substance that is released by the body and causes another individual of the same species
invertabrate
an animal that does not have a backbone
ganglion
a mass of nerve cells
gut
the digestive tract
coelom
a body cavity that contains the internal organs
open circulatory system
a circulatory system in which the circulatory fluid is not contained entirely within vessels
closed circulatory system
a circulatory system in which the heart circulates blood through a network of blood vessels that form a closed loop
exoskeleton
a hard external supporting structure
compound eye
an eye composed of many light detectors
antenna
a feeler that is on the head of the invertabrate
metamorphosis
a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place
endoskeleton
an internal skeleton made of bone or cartilage
water vascular system
a system of canals filled with a watery liquid that circulates throughout the body of an echinoderm
