NCEA Level 3 Biology - Plant and Animal Responses
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34 terms
Terms | Definitions |
|---|---|
 Abiotic Factors | Non living environmental factors affecting an organism |
| Biotic Factors | Living factors affecting an organism |
| Intraspecific Competition | Competition between different species |
| Interspecific Competition | Competition between organisms of the same species |
| Taxis | Movement towards or away from a stimulus |
| Structural, Behavioral, Physiological, Life History | The 4 different adaptation an organism can have |
| Predation | One animal kills another for food |
| Parasitism | One organism feeds off another but does not kill it |
| Amensalism | One organism benifits while the other is harmed |
| Alleopathy | One organism secretes a substance to inhibit the growth of another |
| Mutualism | Relationship where both organisms benifit |
| Commensalism | One species benifits while the other is not affected |
| Courtship | Ritualised behaviour between members of the same species to facilitate sexual reproduction |
| Orthokinesis | Non-directional response to the speed of an organism |
| Klinokinesis | Non-directional response to the random tuning and movement of an organism |
| Zeitgieber | Environmental stimulus that resets an organisms biological clock |
| Migration | Mass movement of a population from one area to another |
| Homing | An animals ability to return home from unfamiliar territory |
| Tropism | Directional growth towards or away from a stimulus |
| Nastic movements | Non-directional responses to a stimulus most often found in plants |
| Circadian Rhythm | A daily rhythm of an organism |
| Endogenous Rhythm | Internal rhythms such as a biological clock that do not necessarily completely connect with with external abiotic cues |
| Exogenous Rhythm | Rhythms that are derived from an external cue such as sunlight or tide |
| Vernalisation | regulation of flowering by a period of chilling |
| Territory | closely guarded area where organisms give birth and care for offspring |
| Home Range | Wider area that the territory that organisms hunt for food,gether water etc. |
| Succession | The changing of an environment due to competition over time |
| Primary succession | The colonisation of new ground, could be a volcanic area or a slip |
| Secondary succession | The colonisation of vacant but fertile ground |
| Auxin | Chemical that causes cells in plants to elongate and therefore grow towards or away from a stimulus |
| Riboflavin | This is what absorbs the light in plants |
| Gibberellins | Increase inter-node length causing long day plants to flower. Helps mobilise endosperm and promotes germination of a wide variety of seeds |
| Cyokinins | Promotes cell division |
| Abcission | Leaf fall, aim is to prevent water loss in cells so that the water in leaves does not freeze |
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