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4355431
PLANT RESPONSES and GROWTH
Description
Revision notes for Unit 2 for OCR Biology students A2 level
No tags specified
ocr
biology
a-level
f215 module 4
biology
a-level
Mind Map by
ize_paul
, updated more than 1 year ago
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Created by
ize_paul
over 8 years ago
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Resource summary
PLANT RESPONSES and GROWTH
TROPISM
Phototropism
Geotropism
Chemotropism
Thigmotropism
Positive=towards
Negative=Away
HORMONES
Auxin
Cytokinins
Gibberellins
Abscisic Acid
Ethene
Transport
Diffusion
Active Transport
Mass flow in Phloem sap/Xylem Tissue
COMMERCIAL USES
Gibberellins
Delay senescence in citrus fruit
+ Cytokinins = elongation of fruits
Brewing
Cytokinins
Tissue culture - mass production
Ethene
2-chloroethylphosphonic acid
Fruit ripening
Fruit drop
Female sex expression in cucumbers
Auxins
Rooting powder
Seedless Fruit
Herbicides
PLANT GROWTH
Meristems
Apical
Lateral bud
Lateral
Intercalary
Cell Division
Cell Elongation
Photopropism
Blue Light
Phototropin 1
Phototropin 2
Shedding Leaves
Cytokinins
Senescense
Abscission
Auxin
Ethene
APICAL DOMINANCE
Apical bud = Dominant over side shoots
Saves energy
Prevents side shoot competition
Auxin
Inhibit side shoot growth
High concentration = apical bud
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