Phosphorous (Quiz 3)

Question 1

Phosphorous can be

…especially with

Answer 1

limiting in well-weathered soils (coastal plains, rainforest)
especially w/ aluminum & iron oxides

Question 2

Phosphorous source is

Answer 2

bedrock (there are no other sources)

Question 3

Phosphorous can tied up

Answer 3

in the soil

Question 4

Phosphorous exists primarily as

Answer 4

phosphate (PO4 3-)

Question 5

mycorrhizae =

Answer 5

fungal associations w/ roots (high amounts in Phosphorous-rich soil)

Question 6

mycorrhizae can facilitate

Answer 6

uptake of water & other nutrients as well

Question 7

mycorrhizae definitely facilitate

Answer 7

uptake of phosphorous

Question 8

ectomycorrhizae form

& examples:

Answer 8

“sheaths” around cells & their mycelia don’t enter root cell cytoplasm
ex: Ascomycota & Basidiomycota

Question 9

endomycorrhizae form

& examples:

Answer 9

“arbucules” (hyphae that enter root cell cytoplasm)

ex: abuscular mycorrhizael fungi aka “AMF”/”Glomeromycota”

Question 10

cluster roots =

Answer 10

“Proteas”

Question 11

cluster roots function in

Answer 11

uptake of Phosphorous

Question 12

cluster roots lack

Answer 12

mycorrhizae

Question 13

cluster roots secrete

Answer 13

enzymes & acids to acquire Phosphorous from soil