Behavoir
What is behavoir
The way organism reacts to a change in the environment
what is stimuli
Any changes in an organism's environment that cause a change in behavior
Growth toward a stimulus is considered a
Positive Tropisim
Growth away from a stimulus is considered a
negative Tropism
What are plant horomons
Substances that act as chemical messengers within plants
What is Tropisim
A response that results in plant growth toward or away from the stimuli
What are the three types of potential stimuli
Light
Touch
Gravity
what is phototropism
The growth of a plant towards or away from light
What is Photoreceptors
Chemicals in plants that allow it to detect light
What are auxins
Responsible for increased plant growth and play a part in positive phototropism
What direction do leaves and stems tend to grow
Towards the light. This allows them to maximize the amount of light they receive
Which part of the plant typically goes through negative phototropism
Roots
What is Thigmotropism
The positive or negative response of a plant to touch
what are Tendrils
Structures on plants that allow them to wrap around or cling on to objects
what are Ethylene
A gas that is produced by fruits, seeds, flowers, and leaves
Why might a trees growth look differently than the growth of a house plant
Because there is a even vs uneven distribution of sunlight
What plants are known to wrap around or cling to structures
Vines
When vines wrap around objects what type of thigmotropism is it
Positive thigmotropism
what is gravitropism
The response of a plant to gravity
what is Gibberellins
Present in rapidly growing areas of plants, such as roots and stems
Roots are an example of what type of thigmotropism
Negative thigmotropism
When roots grow TOWARD gravity it is
positive Gravitropism
Three types of flowering responses are
Long-day, Short-day, Day-neutral
What are Flowering Plants
Plants that produce flowers in order to reproduce
What is Cytokinins
Increases the rate of cell division and slows the aging process of flowers and fruits