Uses of Plant Hormones (OCR GCSE Biology A (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
Why do humans use plant hormones in agriculture and horticulture?
Why do humans use plant hormones in agriculture and horticulture?
To increase yield, obtain desirable features, and lower costs
What type of plants do auxin-based weedkillers specifically target?
What type of plants do auxin-based weedkillers specifically target?
Broad-leaved plants
How does auxin in weedkillers cause weeds to die?
How does auxin in weedkillers cause weeds to die?
Cells grow too rapidly
Why is auxin used in rooting powder for plant cuttings?
Why is auxin used in rooting powder for plant cuttings?
To clone plants with desirable features
What effect does rooting powder containing auxin have on cuttings?
What effect does rooting powder containing auxin have on cuttings?
New plant grows very quickly
What do plant cells form when auxin is added in tissue culture?
What do plant cells form when auxin is added in tissue culture?
Roots and shoots
In what state is fruit picked when ethene treatment is planned?
In what state is fruit picked when ethene treatment is planned?
Not ripe
Why is unripe fruit better for transport?
Why is unripe fruit better for transport?
It is firm so gets less bruised
How does ethene cause fruit ripening?
How does ethene cause fruit ripening?
Controls cell division & stimulates enzymes
How are gibberellins used in the brewing industry?
How are gibberellins used in the brewing industry?
Increase barley seed germination rate
What advantage do gibberellins give for flowering?
What advantage do gibberellins give for flowering?
Flowering in any conditions
Why is gibberellin sprayed on seedless fruit?
Why is gibberellin sprayed on seedless fruit?
To increase their size