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SLS Bio11 Animals MD

TermDefinition
asexual reproduction Asexual reproduction generates offspring that are genetically identical to a single parent.
cell the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.
cephalization the concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development.
closed circulatory system Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.
coelom the body cavity in metazoans, located between the intestinal canal and the body wall.
colonial Animals that live in colonies
fluid feeding Fluid feeders are organisms that feed on the fluid of other organisms.
endoskeleton an internal support structure of an animal, composed of mineralized tissue
exoskeleton a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
excretion the process of eliminating or expelling waste matter.
filter feeding Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure.
free-living Living independently of another organism; not part of a parasitic or symbiotic relationship. Moving independently; not sessile.
internal transport A transport system is a means by which materials are moved ('transported') from an exchange surface or exchange surfaces to cells* located throughout the organism.
invertebrates an animal lacking a backbone, the invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
levels of organization The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
life functions Digestion, circulation, movement/locomotion, excretion, respiration, reproduction, immunity, coordination and synthesis.
medusa a form of cnidarian in which the body is shaped like an umbrella. The other main body-form is the polyp.
motility/motile how one moves / exhibiting or capable of movement
multicellular of an organism or part having or consisting of many cells.
niche a position or role taken by a kind of organism within its community.
open circulatory system The open circulatory system is a system in which a fluid in a cavity called the hemocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolymph.
organ part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
organ system a group of organs that work together to perform one or more functions. Organs make up an organism
parasite/parasitic parasite definition. An organism that lives off or in another organism, obtaining nourishment and protection while offering no benefit in return.
polyp a solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles. polyps are a phase in the life cycle that alternates with medusoid phases
reproduction the production of offspring by a sexual or asexual process.
respiration a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
response The way that an animal acts towards stimuli in its environment
sessile of an organism fixed in one place; immobile
sexual reproduction the production of living organisms by combining genetic information from two individuals of different types sexes. In most higher organisms, one sex produces a small motile gamete that travels to fuse with a larger stationary gamete produced by the other.
symmetry the balanced distribution of duplicate body parts or shapes.
tissue a cellular organizational level intermediate between cells and a complete organ. An ensemble of similar cells from the same origin that together carry out a specific function.
vertebral column he spine; the backbone. determines whether or not the organism is a vertebrate or an invertebrate.
Created by: 100000734507330