On The Move
This is the passive movement of particles from a region of high concentration to one of low concentration.
What is diffusion?
This compound regulates oxygen levels in legume nodules.
What is leghemoglobin?
This state has the greatest amount of acid mine drainage and very high mercury contamination.
What is Pennsylvania?
Your bean plants are stunted with dark green leaves.
What is phosphorus deficiency, phosphate?
Heavy fertilization of landscape trees may improve growth, but may make them more susceptible to this by de-incentivizing root growth.
What is abiotic stress?
Since it is largely immobile in the soil, phosphorus must be acquired by the roots using this method.
What is interception?
These two metals are required in large quantities to form nitrogenase.
What are iron and molybdenum?
Plants that are able to take up and store extremely high levels of heavy metals are called this.
What are hyperaccumulators?
Apples in your garden show signs of blossom end rot.
What is calcium deficiency, gypsum?
California apples tend to be crisper than Pennsylvania apples because of lower humidity, fewer clouds, and less this - don't get burned!
What is acid rain?
Most nitrate arrives at the root surface through this process.
What is mass flow?
Though not an essential plant nutrient, this is needed by rhizobia in small quantities to carry out BNF.
What is cobalt?
This nutrient is most available, and potentially toxic, as soil acidity increases.
What is iron?
You've just starting working on a new farm in CA and select an alfalfa cultivar because it grew well in PA, but its smaller and yellow.
What is sulfur deficiency, sulfur?
Your neighbor spend hours every fall raking the leaves in their yard unknowingly removing this important nutrient from their lawn.
What is calcium?
When water enters the root, it may be transported radially through the symplast or through this.
What is the apoplast?
This metal is required for plants to assimilate nitrate nitrogen, but not ammoniacal nitrogen.
What is molybdenum?
Feeling parched? Your houseplant looks withered, but the soil is moist?
What is salt toxicity?
Your maize plants are yellow and stunted despite applying NPK fertilizer. You also realize your soil pH is high.
What is nitrogen, sulfur?
Buffered phosphorus fertilizers, like this one, reduce leaching and are used commercially in the USA.
What is Alumina-P?
These specialized parenchyma cells facilitate the movement of sugars in and out of the phloem.
What are transfer cells?
This metal is required to form ureases.
What is nickel?
You intercrop maize and soybean. The soybean starts developing necrotic spots on the leaf margin, but the maize looks fine?
What is boron toxicity?
The leaves of your potted plant sitting in high light on your patio develops brown spots, especially at the margin.
What is manganese toxicity, lime?
The imbalance of these 3 competing nutrients is common in Pennsylvania gardens and farms.
What are potassium, calcium, and magnesium?