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Q. No.What is necessary for ripening of fruits:
1. 80% of ethylene
2. Abscisic acid
3. 2, 4 D
4. A.M.O. – 16
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following induces morphogenesis in tissue culture:
1. Gibberellin
2. Cytokinin
3. IAA
4. Ethylene
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich weedicide can defoliate the complete forest:
1. 2, 4-D
2. AMO–1618
3. MH
4. ABA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAgent orange is:
1. Biodegradable insecticide
2. Di auxin (2–4,D and 2, 4, 5 T) weedicide
3. Biofertilizer
4. Biopesticide
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEffect of light and dark rhythm on plants is known as:
1. Photonasty
2. Phototropism
3. Photoperiodism
4. Photomorphogenesis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGrowth of leaf primordia is:
1. First apical then marginal
2. Only apical
3. Only marginal
4. Lateral
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is a phytotron:
| 1. | A device to grow the plants in a controlled environment |
| 2. | Growing plants in greenhouse |
| 3. | Radiation chamber to induce the mutations |
| 4. | Apparatus to study the effect of light on plants |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyExponential growth is shown by:
1. Unicellular forms
2. A cell in tissue culture
3. Embryo
4. Multicellular plants
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the apical bud has been removed then we observe:
1. More lateral branches
2. More axillary buds
3. Plant growth stops
4. Flowering stops
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich hormone is responsible for fruit ripening:
1. Ethylene
2. Auxin
3. Ethyl chloride
4. Cytokinin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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