The element which is present below the critical concentration?

(1) Deficient

(2) Efficient

(3) Beneficent

(4) Sufficient

Subtopic:  Mineral Deficiency & Toxicity |
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The 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

Subtopic:  Mineral Deficiency & Toxicity |
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The 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

Subtopic:  Mineral Deficiency & Toxicity |
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The knowledge of deficiency symptoms of mobilizable and immobilizable substances actually helps in

(1) Horticulture

(2) Agriculture

(3) Both A and B

(4) Pisciculture

Subtopic:  Mineral Deficiency & Toxicity |
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Chlorosis 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

Subtopic:  Mineral Deficiency & Toxicity |
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Necrosis is not caused by deficiency of

(1) Ca, K

(2) Mg, Cu

(3) Cu, Mg

(4) K, Zn

Subtopic:  Mineral Deficiency & Toxicity |
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Deficiency 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

Subtopic:  Mineral Deficiency & Toxicity |
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Deficiency symptoms of nitrogen and potassium are visible first in

1. senescent leaves

2. young leaves

3. roots

4. buds

Subtopic:  Mineral Deficiency & Toxicity |
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When 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.

Subtopic:  Mineral Deficiency & Toxicity |
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Critical 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

Subtopic:  Mineral Deficiency & Toxicity |
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