Key Terminology (Grade 12 NSC Matric Life Sciences): Flashcards
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Practise the cards
10 cards from this deck
Hormone (in plants)
Hormone (in plants)
Chemical messenger produced in one part, has effect in another
Tropism
Tropism
Directional growth towards or away from environmental stimuli
Phototropism
Phototropism
Plant growth response to light
Geotropism
Geotropism
Plant response to gravity
Unilateral light
Unilateral light
Light from only one direction or side
Herbicide
Herbicide
Chemical substance toxic to plants, eliminates weeds
Apical bud
Apical bud
Growing point at tip of stem
Apical dominance
Apical dominance
Apical bud hormones prevent side branch growth near stem tip
Phototropism involves
Phototropism involves
Movement and growth direction (not energy production)
Removing apical bud causes
Removing apical bud causes
Side shoots to grow more vigorously