PLANT PHYSIOLOGY
MINERAL NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mineral is a micronutrient
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Deficiency persists for a long time
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Mineral is very mobile within the plant
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Older leaves are in direct contact of sunlight
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Detailed explanation-1: -The mineral which is mobile within the plants reaches the valuable part, which is typically new growth. The plants pull the nutrients from the old parts to support the development of the young leaves. Therefore, if the mobile mineral is lacking in the plant, old leaves show its deficiency.
Detailed explanation-2: -Calcium (Ca) Hence first symptom of deficiency appears on the younger leaves and leaf tips.
Detailed explanation-3: -Chlorosis is a physiological disorder that occurs to deficiency of mineral elements (eg; Mn, K, Zn, Fe, Mg, S and N).
Detailed explanation-4: -Chlorosis: Chlorosis or loss of chlorophyll leads to the yellowing of leaves. It is caused by the deficiencies of nitrogen, potassium, magnesium, sulphur, iron, manganese, zinc, and molybdenum. Necrosis: Necrosis is the death of plant tissues as a result of the deficiencies of calcium, magnesium, copper, and potassium.
Detailed explanation-5: -Manganese or zinc or magnesium deficiencies within the plant also will cause chlorosis. Deficient nitrogen or proteins can also cause chlorosis. Hence in plants, chlorosis is caused by the deficiency of nitrogen, manganese, magnesium.