Mineral Nutrition Flashcards
(8 cards)
what are the elements the organism need?
All organisms need element such as calcium, magnesium, sulfur, phosphorus, nitrogen
How plant metabolize ?
Plant metabolism is based on sunlight, chemical that present in water, air, soil.
What element can be used immediately after absorbed ?
For some elements, after the mineral is absorbed from the soil, it can be used immediately as it is.
• An example is potassium, which is used by cells such as guard cells to adjust their turgor and water relations. Simple potassium ions are sufficient.
which mineral element is complex ?
Mineral elements such as iron and magnesium are more complex because they must be incorporated into compounds such as cytochromes or chlorophyll molecules before they are useful.
Key term soil, mineral nutrition ?
The term “mineral nutrition” covers a variety of types of plant metabolism.
The term “soil” covers a wide variety of substances. The various soils are important to plants not only in supplying minerals and harboring nitrogen fixing bacteria, but also in holding water, supplying air to roots, and acting as a matrix that stabilizes plants, preventing them from blowing over.
The importance of various soil to plants ?
supplying minerals
harboring nitrogen fixing bacteria
holding water
supplying air to roots
acting as a matrix that stabilizes plants
preventing them from blowing over.
how is the hydroponic experiment ?
In a hydroponics experiment such as this one at Penn State University, the test solution is often just a water solution in a bottle of boron-free glass. Air must be bubbled through the liquid to permit root respiration (clear plastic tubes). The bottles are wrapped in foil or painted black to exclude light, more closely resemble a soil environment, and prevent the growth of algae.
why mineral deficiency disease occur ?
• Desert soils often have excessive amounts of all available minerals because ground water moves upward, carrying dissolved minerals with it.
• These can reach such strong concentrations that the water potential of the soil solution is extremely negative and roots are unable to extract water from it
