Definitions
What is a hormone?
An internal regulator
How many types of tropisms are there? and what are they?
There are two types: a positive tropism (plant growth towards the stimulus) and a negative tropism (plant growth away from the stimulus)
How many main plant hormones are there? What do they do?
5 main hormones that act as signals, stimulating or regulating plant growth activity
What are some essential factors for plant growth?
Light energy (sun), carbon dioxide (from the surrounding atmosphere), water, etc.
What is the meaning of the acronym pH?
Potential of hydrogen
What is a macronutrient?
Nutrients required in volumes larger than 1% of a plant's dry weight
What soil pH are the majority of plants able to survive in?
Slightly acidic soils (pH 6-7)
What is an example of a micro nutrient that plants need to grow?
Chlorine, iron, boron, manganese, zinc, copper, molybdenum, etc.
What is Meristematic tissue?
A type of tissue in plant cells where plant cells are produced
What is a trophism?
a plant’s growth response to an external stimulus, deriving from one direction in the environment
What is a Thigmotropism?
A plant’s growth response to mechanical stimulants (touch). This can include contact with objects, organisms, or wind