12 - Plant Nutrition Flashcards
Carnivorous plants
Select one:
A. Depend on animals as a source of nitrogen
B. Plants that grow on other plants
C. Are parasitic
D. Are incapable of photosynthesis
E. Depend on animals as a source of carbon
Depend on animals as a source of nitrogen
How do the anions gain entry into the cell
through cotransporters (nitrate, phosphate or others)
H+ + NO3-
The CO2 released by the plant root reacts with _______ to form _____ which then releases ________
water; H2CO3 (carbonic acid); protons
H2O + CO2 -> H2CO3 -> HCO3- + H+
How does loam create an ideal environment?
airspaces
hold onto sm particles and minerals
What are the 6 macronutrients that form the plants structure
- Carbon
- nitrogen
- hydrogen
- oxygen
- potassium
the loss of nutrients via the movement of water through soil is called _______. Why does this happen
leaching
because the negative ions are not bound to the soil
Soil particles have a _____ charge and this ______ water and _____
negative; attracts; ions
What is the most idea composition of inorganic materials
loam
a mix of sand, silt, & clay
_____ of a nutrient will affect weather a nutrient will leave older leaves and travel to younger leaves who require it for their growth
mobility
The root secretes _____ ions to displace _______
H+; cations
How can pH affect the avalability of essential elements
- affects cation exhange
What is soil composed of that is inorganic
- sand
- silt
- clay
- gravel
Decaying organic matter is called ________
humus
Nitrogen fixation is
Select one:
A. Performed by mycorrrhizal fungi
B. Detrimental to plants
C. Performed only by plants
D. Supported by humus in the soil
E. The oxidation of nitrogen gas
Supported by humus in the soil
Roots release _____ as a by-product of ___________
CO2 cellular respiration
If either Mg2+ or Iron is defecient in a plant, what is the result
stunted growth and discolored leaves - if either of these nutrients are deficient chlorophyll productions will be affected causing discoloration of the leaves
list some of the other living organisms that support a plant`s nutrient uptake and survival
- nitrogen fixing bacteria
- humus
- rhizobium bacteria
- mycorrhizal fungus
- actinomycetes
What are some of the ways that soil is created chemically?
- mosses secrete weak acids
Of the inorganic composition of soil, which of them hold the nutrients for plants?
sand
silt
In a typical soil,
Select one:
A. more clay means more air space and oxygen for the roots
B. the topsoil tends to lose mineral nutrients by leaching
C. the majority of loam consists of large sized sand particles
D. dead and decaying matter is harmful to plants
E. only micronutrients are available to the plant
the topsoil tends to lose mineral nutrients by leaching
Describe what is going on with rhizobium bacteria
symbiotic relationship
the bacteria fixes N2 gasses into NH4+ which is used by the plant
and the plant provides sugar to the bacteria
A mineral deficiency is more likely to affect older leaves more than younger leaves if
Select one:
A. The mineral is required for chlorophyll synthesis
B. The mineral is a macronutrient
C. The mineral is very mobile within the plant
D. The older leaves are in the shade
E. The mineral is a micronutrient
the mineral is very mobile within the plant
What are some of the “other things found in soil?
fungi, pillbugs, bacteria, yeasts, worms
they help decompose matter and release materials that then can feed the plants
what charge do soil particles have?
negative
