Light for plant growth
Light impact on plants
Processes of plant growth
Light quality
Hardiness zones
100

What do reflecting green light cause?

It cause plants to appear green.

100

What lights have the better impact on plant growth?

Red, and blue light.

100

Respiration

The process through which plant leaves, stems and roots consume oxygen and give off carbon dioxide.

Plants produce much more oxygen through photosynthesis.

100

What is Light intensity?

It's the  amount of light that a light source gives off in the direction of the object.

100

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.

200

Why do plant have a certain wavelength?

 Because they contain pigments like chlorophyll.

200

What red light causes?

It cause elongated and soft growth.

200

Absorption

The process by which plant roots take in water and air.

200

Why is DLI important for plants?

It ensures that the light received by the plants is optimum for their growth cycles and needs.

200

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.

300

What is plant pigment?

 Pigment is any coloured material found in a plant or animal cell.

300

What blue light cause?

It cause shortened, hardened, and darker plants.

300

Transpiration

The process by which plants lose water from leaves and stems.

300

Photoperiodism

The response of plant growth based upon the number of hours of light received each day.

300

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.

400

Reproduction

The plant process that increases plant numbers.

usually by seeds.

400

What red and blue light combined cause?

It promotes flowering.

400

Translocation

The process by which food and nutrients are moved within a plant from one plant part to another.

400

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.

400

Nucleus

Location of plant genetic and hereditary make-up.

500

Stages of plant growth

Javenile-when plant grows from the seed.

Reproductive-plant produces flowers, seeds, and fruits.

Dormant-when a plant rest.

500

Why does red and blue have the greatest impact on plant growth?

Because they are absorbed by the photosynthetic pigments in plants.

500

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.

6H20-C6H1206+602

500

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.

500

Cell wall

Rigid and provides support for the cell and thus the whole plant.

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