Q. No.The element which is present below the critical concentration?
(1) Deficient
(2) Efficient
(3) Beneficent
(4) Sufficient
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe deficiency symptoms of iron, magnesium and calcium in plants may actually be due to the toxicity of
1. Potassium
2. Manganese
3. Iron
4. Chlorine
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe elements which are actively mobilizable within the plants and exported to young developing tissues. The deficiency is symptom is observed in
(1) Both in young and old parts
(2) Only in young parts
(3) First in old parts
(4) First in young parts
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe knowledge of deficiency symptoms of mobilizable and immobilizable substances actually helps in
(1) Horticulture
(2) Agriculture
(3) Both A and B
(4) Pisciculture
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChlorosis is not
(1) Loss of chlorophyll
(2) Leading to yellowing of leaves
(3) Deficiency of elements N, K, Mg, S, Fe, Mn, Zn and Mo
(4) Accumulation of mutated chlorophyll
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNecrosis is not caused by deficiency of
(1) Ca, K
(2) Mg, Cu
(3) Cu, Mg
(4) K, Zn
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDeficiency of which of the given groups of elements causes necrosis?
1. Ca, Mg, Cu
2. N, S, Fe
3. N, S, Mo
4. K, S, Mo
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDeficiency symptoms of nitrogen and potassium are visible first in
1. senescent leaves
2. young leaves
3. roots
4. buds
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen the plants are grown in magnesium deficient but urea rich soil, the symptoms expressed are:
1. yellowish leaves
2. colourless petiole
3. dark green leaves
4. shoot apex die.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCritical concentration is the concentration of
(1) Any element below which plant growth is retarded but reproduction is not compromised
(2) Essential element below which plant growth is retarded
(3) Beneficial elements below which plant growth is retarded
(4) Beneficial elements above which plant growth is retarded
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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