Light for plant growth
What do reflecting green light cause?
It cause plants to appear green.
What lights have the better impact on plant growth?
Red, and blue light.
Respiration
The process through which plant leaves, stems and roots consume oxygen and give off carbon dioxide.
Plants produce much more oxygen through photosynthesis.
What is Light intensity?
It's the amount of light that a light source gives off in the direction of the object.
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.
Why do plant have a certain wavelength?
Because they contain pigments like chlorophyll.
What red light causes?
It cause elongated and soft growth.
Absorption
The process by which plant roots take in water and air.
Why is DLI important for plants?
It ensures that the light received by the plants is optimum for their growth cycles and needs.
Hardiness zones definition
Zones are divided into 10F increments, Zones range from 1-13, Southern coast of NC is Zone 8, Piedmont of NC is Zone 7 3. Western mountains of NC is Zone 6.
What is plant pigment?
Pigment is any coloured material found in a plant or animal cell.
What blue light cause?
It cause shortened, hardened, and darker plants.
Transpiration
The process by which plants lose water from leaves and stems.
Photoperiodism
The response of plant growth based upon the number of hours of light received each day.
What is a herbaceous?
Herbaceous means that the plant has non-woody stems that reach their full height and produce flower within one year, before dying back over the winter and then reappearing the following spring ready for a repeat performance.
Reproduction
The plant process that increases plant numbers.
usually by seeds.
What red and blue light combined cause?
It promotes flowering.
Translocation
The process by which food and nutrients are moved within a plant from one plant part to another.
What is a neutral plant?
A plant that flowers regardless of the length of the period of light it is exposed to: cucumber, corn, chili pepper, cotton, potato, and tomato.
Examples- Spinach and Dill.
Nucleus
Location of plant genetic and hereditary make-up.
Stages of plant growth
Javenile-when plant grows from the seed.
Reproductive-plant produces flowers, seeds, and fruits.
Dormant-when a plant rest.
Why does red and blue have the greatest impact on plant growth?
Because they are absorbed by the photosynthetic pigments in plants.
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.
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Long and short-day plants definition
Long-day plants can flower if the light period is as long as or longer than the critical day length.
Short-day plants can flower when the light period is shorter than the critical day length.
Cell wall
Rigid and provides support for the cell and thus the whole plant.