Plants Flashcards
Photoperiodism
Photoperiodism is the physiological reaction of organisms to the length of night or a dark period. It occurs in plants and animals. Photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods.
photoreceptor
a specialized protein that is able to detect and react to light
photomorphogenesis
the regulatory effect of light on the growth, development and differentiation of plant cells, tissues and organs
phototropism
the movement of a plant toward or away from light
phytochrome
phytochrome: any of a class of pigments that control most photomorphogenic responses in higher plants
chromophore
: the group of atoms in a molecule in which the electronic transition responsible for a given spectral band is located
Nitrogen
Its the process of going from the atmosphere into the soil vía decay and it transform back up through plant to life. Nitrogen deficiency in plants hinders growth. New leaves will take up the nitrogen leaving older leaves without. Older leaves turn yellowish green and spindly stems
Potassium
It helps build proteins in the plant. It slows down photosynthesis with lack of potassium. A weak stem is a sign. The step ATP creates the way for photosynthesis
How much humus have we lost
2 thirds in the last 200 years from extractive agriculture.
The basis of a good scientific investigation is
Using hyptheiss
An oxygen molecule contains
Each molecule is made up of two oxygen atoms that are strongly joined together.
By 2050, the amount of arable land is predicted to be about
20 % pf the earths surface
A carbon dioxide molecule contains
carbon dioxide molecule contains one carbon atom and two oxygen atoms
Cloche
A plastic covering for garden
Cotyledon
The first tiny leave on a plant after germination
Dead head
To remove dead flowers from a plant
Guerilla gardening
Taking of abandoned land without permission
hardening off
Getting plants ready for outside weather by slowly taking them outside for extended periods of time
Over winter
the time from fall to spring a plant can be out. Or covering garden
Taproot
A plant who starts roots downward
Propagation
Taking part of an original plant and creating a new one. By root or cutting
perennial herb plants need what every 3 years
Propagation, splitting every 3 years or so
3 main nutrients for plants
Nitrogen potassium phosphorus
Phosphorus
Needed for flowering (snow peas zucchini’s are flowering) turns carbohydrates into sugar.
Aerate
Bringing oxygen to something
Green manure
Using a fast growing cover crop chopping in up and layering it under soil. Helps with weeds
Heterotrophs
Grow by consuming organic molecules. First organisms on the planet
Use light energy to produce organic molecules to grow
Autotrophs
How many trees are cut down per year
The size of France is cut down trees per yearu almost 50,000,000 per year. That’s 1 trillion leaves per day
Annual/ perennial
A plant that completes its cycle in a season or year. Seed to plant to flower and seed again and than the plant will die. Perennial last longer than a 2 years
Amendment
adding ingredients to soil to help it
