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Explain what would happen if:
Magnesium element is deficient in the soil.
If Magnesium element is deficient in the soil, it will cause interveinal chlorosis, necrosis and reduced production of chlorophyll synthesis.
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Each of the following questions / statements have four suggested answer. Rewrite the correct answer in each case:
The cell division in the tunica region of shoot apex is:
Periclinical
Horizontal
Anticlinal
Radial
C.
Anticlinal
Mention the most significant function of the following:
Leg haemoglobin
Leg haemoglobin is a oxygen scavenger and helps in Nitrogen fixation.
(a) Mention one role and one deficiency symptom of the following elements in plant nutrition:
(i) Phosphorus (ii) Iron (iii) Chlorine
|
Role |
Deficiency symptom |
|
|
Phosphorus |
A constituent of cell membranes, nucleic acids and nucleotides, certain coenzymes and ATP, influences nitrogen metabolism used in phosphorylation of sugars in respiration. |
Stunted growth chlorosis, dead necrotic areas on leaf. |
|
Iron |
Constituent of electron carriers and certain enzymes Ferradoxin acts as a activator for enzymes. |
Interveinal chlorosis induces chloroplast disintegration. |
|
Chlorine |
Maintains electrical osmotic and anion cation balance across cell membrane, essential for 02 evolution in photosynthesis. |
Chlorosis wilting of leaves, stunted root growth and reduced fruiting. |
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