Which of the following is not true for flowering?
1. Only duration of dark period is important
2. Certain plants depend not only on a combination of light and dark exposures but also their relative durations
3. The site of perception for light or dark duration are the leaves
4. There is a hormonal substance which migrates from leaves to shoot apices for inducing flowering only when the plants are exposed to the necessary inductive photoperiod.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFlowering can be affected in certain plants
(1) by quantitative exposure to low temperature
(2) by qualitative exposure to low temperature
(3) Both A and B
(4) It does not depend on low temperature exposure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVernalisation prevents
(1) Precocious reproductive development late in growing season
(2) Late reproductive development
(3) Flowering
(4) Fruiting
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVernalisation
(1) Disables the plant to have fruits
(2) Enables the plants to have fruits
(3) Enables the plants to have sufficient time to reach maturity
(4) Brings senescence
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVernalisation refers to
(1) The promotion of flowering by a period of high temperature
(2) The inhibition of flowering by a period of low temperature
(3) The promotion of flowering by a period of low temperature
(4) The inhibition of flowering by a period of high temperature
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following does not has two kinds of varieties?
(1) Wheat
(2) Radish
(3) Barley
(4) Rye
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe spring varieties are normally planted in…...and come to flower and produce grain……
(1) Autumn season, after the end of growing season
(2) Spring season, at the end of growing season
(3) Spring season, before the end of growing season
(4) Autumn season, at the end of growing season
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWinter varieties should be planted in
(1) Winter
(2) Autumn
(3) Spring
(4) Summer
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWinter varieties are harvested in
(1) Autumn
(2) Mid summer
(3) Mid Winter
(4) Spring
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWinter varieties resume their Growth in
(1) Spring
(2) Summer
(3) Winter
(4) Autumn
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology