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Botany 3.2

Terms

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Soil
-produced by erosion of rocks and mountains -minerals in soil depend on parent material -Provides most of the elements needed by plants
__ essential elements for plants
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An element is essential if...
1. it is used in biochemistry of cell 2.Plant will nor reproduce with out it 3. Deficiency symptoms
Deficiency symptoms
1.function of element in plant 2.mobility of element in phloem.
How do plants adsorb nutrients?
The element must be water soluble which is is affected by the soil\'s pH.
Micro nutrients are usually __ and do ___
metals; cotrol enzyme function
Mobile elements
nitrogen, phosphorous, potassium, magnesium and sulfur.
non-mobile elements
calcium, iron, zinc, molybdenum, boron, copper, and manganese.
chlorosis
yellowing of leaves due to deficiency
the __ element can be moved through the ___ from ___ to ___ leaves.
deficient; phloem; old; new
Iron can\'t be moved so __ leaves show deficiency first.
younger
Nitrogen can be moved so __ leaves show deficiency first.
Older
3 Major nutrients that plants need and what they do:
-Nitrogen (vegetative growth) -Phosphorous (flowering) -Potassium
Negative effects of fertilizer
People apply too much and cause run off. This causes water contamination and eutrophication.
Cause of 1930\'s Dust Bowl
change in climate and abuse of land
In the US, erosion removes soil _ times faster than it is formed
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Germ
embryo of a grain.
starch
main component of seed. Feeds embryo.
Bran
outer shell of grain seed

Deck Info

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