(physiology) A biological response triggered by a lack of oxygen in which the organism takes in water and becomes turgid and immobile, possibly a form of cryptobiosis.
(biology) A hypothesis in evolutionary biology that explains selective altruism among individuals of a species, involving preferential treatment of individuals with certain characteristics.
(biology) A species that requires input from another biological taxon (normally from a species which is closely related to the kleptonic species) to complete its reproductive cycle.
(evolutionary theory) The resemblance of two or more poisonous species with each other, giving the effect that they are all more recognisable to potential predators. For example, the monarch butterfly and the viceroy butterfly.
Alternative form of protoorganism [(biology) An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.]
(biology, ecology) A system of multiple organisms that may be considered a single organism, such as an insect colony, or an organism with endosymbionts.
(evolution) A suite of partially interfertile species that exchange genes, either directly or indirectly, under certain evolutionary and biogeographic conditions, and where interspecific gene flow is episodic and spatially variable in nature.
The process or result of taking a form that reflects the surrounding environment.
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