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.

Subtopic:  Photoperiodism |
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Flowering 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

Subtopic:  Vernalization |
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Vernalisation prevents

(1) Precocious reproductive development late in growing season

(2) Late reproductive development

(3) Flowering

(4) Fruiting

Subtopic:  Vernalization |
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Vernalisation

(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

Subtopic:  Vernalization |
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Vernalisation 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

Subtopic:  Vernalization |
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Which of the following does not has two kinds of varieties?

(1) Wheat

(2) Radish

(3) Barley

(4) Rye

Subtopic:  Vernalization |
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The 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

Subtopic:  Vernalization |
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Winter varieties should be planted in

(1) Winter

(2) Autumn

(3) Spring

(4) Summer

Subtopic:  Vernalization |
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Winter varieties are harvested in

(1) Autumn

(2) Mid summer

(3) Mid Winter

(4) Spring

Subtopic:  Vernalization |
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Winter varieties resume their Growth in

(1) Spring

(2) Summer

(3) Winter

(4) Autumn

Subtopic:  Vernalization |
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