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NCEA Level 3 Biology Plant Animal Responses AS 91603

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Term
Definition
abiotic factors   show
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show A plant hormone with a range of effects e.g. promotes leaf and fruit abscission in some species.  
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show Leaf or fruit fall.  
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actogram   show
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adaptation   show
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show The way in which the response helps to ensure the survival of the individual and therefore the population or species as a whole.  
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show Attempts by an animal to harm or kill another animal of the same species with which it is competing (not predation).  
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agonistic behaviour   show
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allelopathy   show
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show Behaviour in which an individual puts itself at risk for the benefit of the group e.g. warning of predators.  
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amensalism   show
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show An interspecific relationship in which one species releases a substance which inhibits the growth or kills another species (e.g. some fungi inhibit the growth of bacteria).  
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show Growth pattern where there is one main trunk/stem and much smaller side branches, due to suppression of lateral (side) buds by a high concentration of auxin near the top of the plant.  
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auxin   show
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Batesian mimicry   show
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show The response of an organism to a stimulus. Can be innate or learned.  
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show An internal timing system in organisms.  
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biotic factors   show
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camouflage   show
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show Prefix for chemicals.  
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chemotaxis   show
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chemotropims   show
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show Means ‘about / approximately’. ONLY used to describe rhythms occurring in constant environmental (free-running) conditions.  
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show A rhythm of about one year occurring in constant environmental (free-running) conditions.  
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show A rhythm of about 24 hours occurring in constant environmental (free-running) conditions.  
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show A rhythm of about one month occurring in constant environmental (free-running) conditions.  
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show A rhythm of about 12.5 hours occurring in constant environmental (free-running) conditions.  
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co-evolution   show
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commensalism   show
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show Occurs when organisms living in the same location require the same resource, for which demand exceeds supply. Can be interspecific or intraspecific.  
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show Cooperation between individuals for successful reproduction, which may include courtship, mating and parental care of offspring.  
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cooperative interactions   show
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courtship   show
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crepuscular   show
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critical day length   show
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show A plant hormone. Various effects, including promoting cell division (and therefore growth).  
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show Activity occurring every 24 hours (NB: zeitgeber(s) present!).  
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day-neutral plant   show
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show A period of arrested development (especially in insects in cold climates).  
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diurnal   show
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show A state of temporarily reduced metabolism.  
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show A parasite which lives or feeds on the outside of its host.  
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show The role of the organism in its ecosystem. Includes its feeding role, activity pattern, habitat and adaptations. Each species has a unique niche.  
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show Part of an organism where the response to the stimulus is carried out.  
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endogenous rhythm   show
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endoparasite   show
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show Process by which the internal clock is reset so that it is synchronised with an environmental rhythm.  
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show A plant hormone which is produced and accumulates in aging fruit, promoting their ripening.  
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show Controlled by an external cue or stimulus.  
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show Interspecific relationship in which one species benefits while the other is harmed. Includes parasitism, herbivory and predation.  
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fitness   show
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show The length of an organism's activity period in the absence of external cues (zeitgebers).  
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free-running   show
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show If two species have the same niche they cannot remain for long in the same habitat. One will be out-competed and eliminated (or at least reduced to a very small population.)  
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show The process by which a plant grows from a seed.  
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gibberellin   show
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show Prefix for gravity.  
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show A plant growth response towards or away from the stimulus of gravity.  
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show The specific environment in which an organism lives.  
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herbivory   show
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hibernation   show
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hierarchy   show
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homing   show
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hormone   show
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hydro-   show
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hydrotropism   show
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show A fixed response to a stimulus, controlled by genes.  
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interspecific   show
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intraspecific   show
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show Condition caused when the endogenous circadian rhythm does not match external cues. Usually caused by travelling across time zones.  
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kin selection   show
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show Non-directional movement response in animals in which the rate of activity is determined by the intensity of the stimulus.  
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show Non-directional movement response in animals in which the rate of turning is determined by the intensity of the stimulus... faster in unfavourable conditions and slower in favourable conditions.  
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learned behaviour   show
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show Any variable factor of the environment that limits the activity of an organism or population.  
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show A plant that flowers when the day length exceeds the critical day length (i.e. requires a short night).  
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magnetic compass   show
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meristem   show
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migration   show
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show The similarity in appearance of one species of animal to another unrelated species that provides a benefit (e.g. protection from predators).  
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monogamy   show
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show The number or proportion of deaths in a population over time.  
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show Where several unpalatable (inedible) species resemble each other, providing protection from predators.  
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mutualism   show
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show Determining the position relative to other locations.  
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show A plant turgor response that is independent of the direction of the stimulus. Not a growth response. Rapid and reversible e.g. sensitive plant (Mimosa).  
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niche differentiation   show
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show Most active at night.  
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show The ability of organisms to determine their location in relation to environmental stimuli.  
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orthokinesis   show
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show A long-lasting relationship between a particular male and female.  
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show A form of exploitation in which one species (the parasite) feeds off another living species (the host).  
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show An organism which is parasitic at only one stage of its life cycle.  
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show Investment of resources by parents in the survival of offspring.  
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period   show
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show The close-up distance around an animal that is never invaded except for mating or fighting.  
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phase shift   show
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show Chemical used as a signal to other members of the same species.  
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photo-   show
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show The day length; this is the most reliable indicator of time of the year.  
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photoperiodism   show
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show Movement of an organisms towards or away from a light stimulus.  
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phototropism   show
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show A plant pigment that controls the photoperiodic response (measures the length of darkness / light).  
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show The first shoot of a young plant.  
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show A social system in which individuals mate with more than one member of the opposite sex during a breeding season.  
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show A form of exploitation in which one species (the predator) kills and eats another species (the prey).  
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r/K strategies   show
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receptors   show
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show A plant that flowers when the day length is less than the critical day length (i.e. requires a long night).  
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show Using the position of the sun to navigate. NB: requires an internal clock to compensate for changing position of sun in sky.  
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star compass   show
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show Using the stars to navigate.  
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stimulus   show
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show Two different biological meanings: where seeds are treated to simulate winter conditions so that germination may occur, OR a vertical pattern in the distribution of species - e.g. the layers of plants in a forest.  
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show When an individual indicates, by an act or posture, that it will not challenge a dominant individual in a social group. This behaviour is important in maintaining a dominance hierarchy.  
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show Lower in rank e.g. in a linear hierarchy  
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show A pattern in the distribution of species over time (e.g. in plants from bare rock to forest).  
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show Ability of an animal to orientate and navigate using the sun’s position. NB: requires an internal clock to compensate for changing position of sun in sky.  
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show The movement of an organism towards or away from a directional stimulus.  
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territoriality   show
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show An area used by an animal for feeding or breeding, that the animal will defend against individuals of its own species. Territories do not overlap.  
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thigmo-   show
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thigmonasty   show
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show A plant growth response towards or away from the stimulus of touch (contact).  
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show A plant growth response to towards or away from a directional stimulus.  
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vernalisation   show
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show The external environmental cue used to ‘set’ the biological clock. In most species, this is the change from light to dark (or dark to light).  
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show A horizontal pattern in the distribution of species e.g. zones of plants of different types up a mountain or bands of particular species on the rocky shore.  
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suprachiasmatic nuclei (SCN)   show
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