Uses of Plant Hormones (AQA GCSE Biology): Flashcards
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Which plants do auxin weedkillers affect?
Which plants do auxin weedkillers affect?
Broad-leaved plants
How does auxin kill weeds?
How does auxin kill weeds?
Causes cells to grow too rapidly
Why is auxin used in rooting powder?
Why is auxin used in rooting powder?
Helps cuttings develop roots quickly
What develops in tissue culture with auxin?
What develops in tissue culture with auxin?
Roots and shoots
Hormone that controls ripening
Hormone that controls ripening
Ethene
Why is fruit picked unripe?
Why is fruit picked unripe?
Firm so less bruised during transport
How to ripen fruit commercially
How to ripen fruit commercially
Expose to ethene & warmer temps
How does ethene reduce fruit wastage?
How does ethene reduce fruit wastage?
More fruit suitable to sell, doesn't ripen too early
How are gibberellins used in brewing?
How are gibberellins used in brewing?
Increase germination of barley seeds for malt
What effect do gibberellins have on flowering?
What effect do gibberellins have on flowering?
Allows flowering in any conditions, bigger flowers
What produces gibberellins in fruit?
What produces gibberellins in fruit?
Seeds
Why is seedless fruit smaller?
Why is seedless fruit smaller?
No seeds to produce gibberellins
How to increase seedless fruit size
How to increase seedless fruit size
Spray with gibberellins
Three reasons to use plant hormones in agriculture
Three reasons to use plant hormones in agriculture
Increase yield, desirable features, lower costs
What does ethene control in plants?
What does ethene control in plants?
Cell division & ripening