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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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abscissic acid   show
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show Leaf or fruit fall.  
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actogram   show
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show A feature of an organism which helps it to live successfully in its environment.  
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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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aggression   show
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show Ritualised behaviour between two members of the same species which are in conflict. Includes threat displays and submissive/dominance behaviours. Reduces actual physical fighting.  
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show An interspecific relationship in which a plant species produces a chemical which is toxic to other species.  
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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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antibiosis   show
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apical dominance   show
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show A plant hormone. Involved in tropic responses because it affects cell elongation, also has various other roles and effects in plants.  
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show When a palatable animal mimics (looks like) an unpalatable one, providing protection from predators.  
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behaviour   show
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biological clock   show
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biotic factors   show
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show Concealment method in which an animal is coloured to match its environment.  
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chemo-   show
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show The movement of an animal towards or away from a chemical stimulus.  
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show Plant growth response towards or away from a chemical stimulus.  
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show Means ‘about / approximately’. ONLY used to describe rhythms occurring in constant environmental (free-running) conditions.  
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circaannual   show
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circadian   show
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circalunar   show
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show A rhythm of about 12.5 hours occurring in constant environmental (free-running) conditions.  
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show When two species with a strong ecological relationship influence each other’s evolution (the relationship acts as a strong selection pressure).  
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show An interspecific relationship where one organism benefits, but the other is unaffected.  
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competition   show
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cooperative breeding   show
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cooperative interactions   show
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show A series of signals exchanged between male and female and ending in mating.  
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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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dormancy   show
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ectoparasite   show
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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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show Controlled by an internal timing mechanism (biological clock). It continues in the absence of environmental cues.  
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show A parasite which lives on the inside of its host.  
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entrainment   show
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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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exploitation   show
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show This means evolutionary fitness and is a measure of an organism’s reproductive success. ‘Fitter’ organisms are more likely to survive, reproduce and pass on their favourable alleles.  
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free running period   show
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show Occurring in the absence of environmental cues.  
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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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germination   show
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show A plant hormone which promotes elongation of shoots.  
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gravi- (or geo-)   show
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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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show A period of suspended activity / very low metabolic activity during winter, generally to survive a lack of food.  
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show When animals have a specific rank in the group. A linear hierarchy (or pecking order) has individuals ranked from highest (alpha individual) to lowest (omega individual).  
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show The ability of an animal to return to its home site over unfamiliar territory. It occurs on a regular (e.g. daily) basis.  
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hormone   show
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hydro-   show
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show A plant growth response towards or away from the stimulus of water.  
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innate behaviour   show
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show Between two different species.  
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show Within one species.  
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jet-lag   show
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show When an individual puts them self at risk to assist the survival of another individual to which they are related. This helps to ensure their alleles are passed on.  
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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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klinokinesis   show
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show Behaviour which is modified by experience.  
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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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show Ability of animals to use Earth’s magnetic field lines for orientation and navigation.  
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show Area at tips of shoots and roots where cells are dividing rapidly.  
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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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nastic responses   show
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niche differentiation   show
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nocturnal   show
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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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parasitism   show
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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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show The length of the activity cycle (how long it takes to repeat) of an organism.  
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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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show A change in the starting time of a rhythm (but not its period).  
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pheromone   show
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photo-   show
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photoperiod   show
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photoperiodism   show
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phototaxis   show
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phototropism   show
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phytochrome   show
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plumule   show
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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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predation   show
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show r-strategist: large number of offspring but little parental care; K-strategist: small number of offspring, but large investment in parental care of each.  
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show Part of an organism which is able to detect a change in the environment (stimulus).  
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short-day plant   show
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solar navigation   show
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star compass   show
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stellar navigation   show
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show A change in the environment which causes a response in an organism.  
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stratification   show
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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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show Prefix for touch (physical contact).  
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thigmonasty   show
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thigmotropism   show
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tropism   show
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vernalisation   show
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zeitgeber   show
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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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show A tiny region within the hypothalamus of the brain, connected by nerves to the eyes. Responsible for controlling the circadian rhythm in animals.  
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