Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
Carbon |
One of the major componants of organic nolecules in plants . Poor growth. |
|
|
O |
Major conponants of organic molecules in plants Poor growth. |
|
|
H |
As H2O Major componants of organic molecules in plants Poor growth , wilting. |
|
|
N |
As No-3 , NH+4 Conponants of amino acids , proteins, nucleotides, nucleic acids chlorophyll coenzymes ,Enzymes Stunted growth and strong chlorosis. Particularly of older leaves. |
|
|
K |
Operation of stomata Cofactors of many enzymes Yellow and brown leaf margins Weak stems Poorly developed roots. |
|
|
Ca |
#Componant of cell walls and middle lamella #Maintenance of membrane structure and permeability. #Signal transduction. ● Crinkling of young leaves ●Death of terminal buds. |
|
|
Mg |
#Componant of chlorophyll molecule #Activates many enzymes. Chlorosis between veins, found in older leaves. |
|
|
P |
As H2PO4-1 #Componant of ATP and nucleic acids. phospholipids. ●Healthy appearance but very slow development. ●Thin stems. ●Purpling of veins. ●Poor flowering and fruiting. |
|
|
S |
as So4-2 #Componants of some amino acids and proteins. ●Chlorosis in younger leaves. |
|
|
Macro elements |
Plants need these in large amounts. 9 elements. C, O, H, N, P, Mg, S, Ca, K |
|
|
Micro nutrients |
Plants require these elements in small amounts Cl, Fe, Mn, B, Zn, Cu, Ni, Mo. |
|
|
Cl |
As Cl- #Osmosis and ionic balance in photosynthesis. ●Wilting ●Stubby roots ● Leaf mottling (uncommon) |
|
|
Fe |
As Fe +3 and Fe+2
#Chlorophyll synthesis in photosynthesis #Nitrogen fixation
●Chlorosis between veins, particularly in young leaves. |
|
|
Zn |
As Zn+2 #Activator of many enzymes and active formation of Chlorophyll. . #Need for DNA transcription. ●Crinkled leaves● Reduced internode length. ●Crinkled leaves ● Reduced internode length. |
|
|
B |
As H2BO-3 #Cofactor in chlorophyll synthesis. #Role in cell wall function #Pollen tube growth. ● Death of meristems ● Thick leathery and discolored leaves. |
|
|
Cu |
As Cu+, Cu+2 #Activator or componant of certain enzymes. ●Light green color through out young leaves ●With drying of leaf tips. ●Roots stunted and excessively branched. |
|
|
Mo |
As MoO-4 #Nitrogen metabolism ● Death of root and shoot tips. ●Chlorosis in older leaves. |
|
|
Ni |
As Ni+2 #Nitrogen metabolism ●Death of leaf tips ● Chlorosis in older leaves. |
|
|
Mn |
As Mn+2 #Activates some enzymes required in photosynthesis. ● Chlorosis between veins, found in young leaves. |
|
|
Essential elements |
17 C, O, H, N, P, S, K, Ca, Mg Cl, Mo, Mn , B, Ni, Zn, Cu, Fe Elements which are required for a plant to complete their life cycle and produce another generation. |
