1
Which process do leaves, stems, and roots consume oxygen and release carbon dioxide?
Respiration
What is light quality?
Amount and duration of light emitted by a light source.
What is a short-day plant?
What are some light source examples?
heat lamp and sunlight
What is the purpose of a seed?
To grow and make a plant.
What is photosynthesis?
The food and manufacturing process in green plants that combines carbon dioxide and water in the presence of light to make sugar and oxygen.
What is light intensity?
Its the amount of light that a light source gives off in the direction of the object.
What are long-day plants?
Plants that can flower if the light period is as long as or longer than the critical day length.
Why do plants have certain wavelengths?
Because they contain pigments like chlorophyll.
What are Hardiness Zones?
Zones based upon average annual minimum winter temperatures.
What is Absorption?
The process by which plant roots take in water and air.
What is plant pigment?
Pigment is any colored material found in a plant or animal cell.
What are some examples of short-day and long-day plants?
Long-day: Spinach and Dill
Short-day: Chrysanthemum and Poinsettia
What are the 3 important factors needed for seed germination?
2. Oxygen
3. Correct temperature
Why are hardiness zones important?
Because hardiness zones are determined to help us better understand which plants will best survive winters in that particular area of the country.
What is the photosynthesis formula?
6CO2 + 6H20 + 672Kcal -> C16H12O6 + 6O2
What colored light has the greatest impact on plant growth?
Red and Blue.
What is photoperiodism?
Its the response of plant growth based upon the number of hours of light received each day.
What are true leaves?
The first true leaves that appear.
How many increments are zones divided into?
What does the 6 stand for?
The quantity of that molecule involved in the reaction.
Why is DLI important for plants?
It ensures that the light received by the plants is optimum for their growth cycles and needs.
What temperature do most horticultural plants thrive in?
Most horticultural plants thrive in a temperature range of 50 F to 85 F.
What is the scientific name for the food supply of a seed?
Cotyledon
What is the percentage of how many herbaceous plants are comprised of water?
80-90%