Oxidizer? I barely know her!
Oxidation/Reduction occurs when what subatomic particle is moved from one atom to another?
Fun fact: This can also occur with whole atoms or compounds.
Electron
When roots are being attacked by oomycete pathogens. The water transporting parts of the root collapse. What are those water transporting structures called?
Xylem
What are the three corners of the pest disease traingle?
Susceptible Host
Conducive Environment
Pest/Pathogen Presence
Why do we use peat in our media?
Water retention among other factors
We add 2 nitrogen compounds. Name both.
100 Bonus Points: The plants can be susceptible to toxicity from one of those nitrogen compounds. Which one is it?
Nitrate and Ammonium.
Ammonium toxicity is possible in plants.
It is important for plants and other organisms to have a reliable source of micronutrients. What is the process called when organic molecules are attached to single metal ions?
100 Bonus Points: Does this process make those molecules more or less resistant to oxidation?
Chelation and they are less resistant to oxidation.
If the plant cannot find enough phosphorus it can create what around its roots to attract symbiotic microbes to help aquire phosphorus compounds?
Thrips like to live in the new grow point of the plants. What is that tissue called?
Apical meristem
Is peat a renewable resource?
Yes, but it takes a long time to form, so renewable is dependent on the timeline.
While inconsistent, sulfur gases (H2S and SO2) can be absorbed through the leaves of plants. What structure would plants use to intake those sulfur gases?
100 Bonus Points: Is sulfur mobile or immobile?
200 Bonus Points: What broad category of compounds does sulfur make the most of in the plants?
Stomata
Immobile
Amino Acids
Name the three major oxidation steps used for our irrigation systems.
1. UV
2. Ozone
3. Hydrogen Peroxide/PAA
To defend from root pathogens
Biological management method
True or False: Peat is naturally alkaline and requires conditioning to neutralize its pH.
False. Peat is naturally acidic.
This element has many important roles in the plant including making HEME proteins that are the precursors to chloroplasts.
100 Bonus Points: Is it mobile or immobile?
Iron and it is immobile.
UV light is intense electromagnetic radiation. Does it have more effectiveness or efficacy as a sanitation step?
300 Bonus Points: What are the general range in nanometers of all forms of UV light?
UV is effective but not efficacious
220-400nm
What is it called when plants sense gravity and use that information to push roots into the ground/media?
Positive geotropism, or gravitropism
Describe the method of action that beneficial nematodes use against soft bodied insects.
<plot of the movie Alien>
Peat is organic matter that has been stopped from fully decomposing. What general category of fungus decomposes organic matter?
Saprotrophs or necrotrophs
Name the element primarily associated with the creation of chlorophyll in the plant. Up to 30% of the total amount of this element found in the plant is part of chlorophyll.
100 Bonus Points: Is this elemental nutrient mobile or immobile?
Magnesium and it is mobile (somewhat mobile).
The other 70% of magnesium is used in enzyme processes.
True or false: Ozone is lighter than air.
False, ozone has 3 oxygen molecules where as the oxygen in air only has 2.
As plants push roots into the media. One hormone accumulated on the downward side of the root, causing those cells to stop growing, effectively steering the root downwards as directed by gravity. What is that hormone?
Auxin
True or False: Beneficial nematodes can swim long distances to find their prey.
False. They do not have longitudinal muscles, so they cannot swim.
Name the two types of areas that can hold water in the media.
Macropores and micropores.
This mineral micronutrient is responsible for a wide range of enzymes that are key to the plant. It can be antagonistic towards molybdenum, zinc, and iron. Its accumulation by the plant is suppressed by calcium and aluminum. Additional nitrogen, potassium, and manganese increase its uptake by the plant.
100 Bonus Points: Is this elemental nutrient mobile or immobile?
Copper and it is immobile.