Macronutrients and micronutrients Flashcards
1
Q
Nitrogen
A
Role
-Parts of proteins, purines, pyrimidines, chlorophyll and cytochrome
Deficiency
- Chlorosis
2
Q
Phosphorous
A
R -Part of nucleic acids, phospholipids, ATP, ADP, AMP D - Brown necrotic areas on leaves - Poor development of vascular tissue
3
Q
Potassium
A
R -Involved in stomatal movement -Forms enzyme system in change of sugar to starch D -Mottled chlorosis Necrotic shrivelling of leaves
4
Q
Magnesium
A
R -Constituent of chlorophyll -Essential for binding of ribosomes -Activator of enzymes of respiration D -Interveinal chlorosis -Necrosis
5
Q
Sulphur
A
R
-Part of amino acids ; cysteine and methionine
-Present in vitamins ; biotin and thiamine
-Required for synthesis of chlorophyll
D
Chlorosis
6
Q
Calcium
A
R -Formation of middle lamella -Helps in lipid metabolism -Translocation of carbohydrates D -Chlorosis of margin of young leaves leading to necrosis -Meristematic region badly affected
7
Q
Iron
A
R -Constituent of cytochrome -Synthesis of chlorophyll and carotenoids D -Interveinal chlorosis -Generalised chlorosis
8
Q
Manganese
A
R -Involved in chlorophyll synthesis -Activator of carboxylase, dehydrogenase D -Chlorotic and necrotic spots in interveinal regions -Mottling of leaves
9
Q
Molybdenum
A
R -Activate nitrogen reductase -Plays important role in nitrogen metabolism D -Mottling & necrosis in older leaves -Whiptail disease in cauliflower
10
Q
Copper
A
R
-Associated with enzymes in the synthesis of ascorbic acid
-Activator of lactase, oxidases
D
-Necrosis in young leaves
-Exanthema in citrus
-Reclamation disease in cereals and pulses
11
Q
Boron
A
R -Translocation of enzymes -Flowering and fruiting -Active absorption D -Death of stem and root apices -Leaves become thick, curled and brittle
12
Q
Chlorine
A
R -Transfer of electrons during photolysis D -Wilted leaves -Reduced fruiting
13
Q
Zinc
A
R -For synthesis of auxin -Phosphorylation of enzymes D -Mottled leaf -Reduction in size of internodes
