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Phototropism
Plant growth towards light sources.
Gravitropism
Plant growth response to gravity direction.
Auxin
Hormone regulating plant growth and responses.
required practical 8- effect of light and gravity on seedling
1)10 germinated cress seeds onto three petri dishes each lines with damp cotton wool
2)shine light from different directions for each dish
3)leave cress seeds alone and observe responses
Gibberellins
Hormones promoting stems to grow and seed germination.
Ethene
Gas hormone influencing fruit ripening and growth.
Plant Growth Hormones
Used in agriculture(farming) to enhance crop production and horticultural(gardening)