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7th Science-Neumeyer

Tropism Plant's growth responses toward or away from a stimulus
Phototropism The growth of a plant toward light. (positive tropism)
Gravitropism Plant growth in response to gravity
Thigmotropism Plants response to touch. (Vines)
Hydrotropism Plant growth in response to water
Hormones Help plants respond to water, touch,light, and gravity.
Photoperiodism Plants response to seasonal changes in the length of night and day.
Dormancy Period when an organism's growth or activity stops
Annuals Have a life of one growing season.
Biennials Complete life cycle in two years.
Perennials Plants live for more than two years.
Created by: pc10