Tag: plant growth and development
Questions Related to plant growth and development
Vernalization is a phenomenon which concerns
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Low temperature requirement for flowering in plants
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Migration of birds from their winter homes to summer habitats
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Immunization of infants against the common infectious diseases
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Entering of cold blooded animals into an inactive state in winter
Vernalization is the acquisition of a plant's ability to flower in the spring by exposure to the prolonged cold of winter, or by an artificial equivalent. Many plants grown in temperate climates require vernalization and must experience a period of low winter temperature to initiate or accelerate the flowering process. This ensures that reproductive development and seed production occurs in spring and summer, rather than in autumn.
Chemical agent that has important role in flowering is
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Fluorocarbon
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GA${ _3}$
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Florigen
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Auxins
What is vernalisation?
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Growth curve in response to light
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Recurrence of day and night
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Effect of day length on plant growth
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Acceleration of the ability to flower by low temperature treatment
Vernalization is the process of induction of flower by prolonged exposure to cold temperature. It is an adaptation shown by plants which are exposed to harsh winter followed by relatively short growing seasons. Vernalization is practiced artificially too.
Vernalization treatment can convert
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A biennial into an annual
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A spring variety into a winter variety
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An annual into a perennial
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All of these
Vernalization is the process of inducing flowering to a plant by exposing the plant to cold of winter or through artificial processes. The process of Vernalization converts a biennial into an annual and spring variety into a winter variety and an annual into a perennial.
Vernalization is
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Growth curve related to light
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Effect of photoperiods on plant growth
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Speeding up ability to flower by low temperature
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Diurnal photoperiodicty
In many plants, the temperature has a profound effect on flowering. Some plants do not flower under the inductive photoperiod conditions but flower when a cold temperature treatment is given to them. This acquisition or acceleration of the ability to flower by a chilling treatment is said to be vernalization. It is the method of inducing early flowering in plants by pretreatments of their seeds at a very low temperature. Thus option C is the correct answer.
The pathway leading to flowering for plants that requires vernalization is the
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Seasonal pathway
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Light dependent pathway
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Temperature dependent pathway
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None of the above
Which of the following can shorten the vegetative period of plants?
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Vernalization
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Apical meristem
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Germination
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All of the above
Which of the following can replace the cold treatment for inducing flowering?
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Auxin
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Gibberellin
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Cytokinin
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None of the above
When gibberellins were applied to certain cold-requiring plants, they flowered without low-temperature treatment. Thus it is conceivable that gibberellins could induce certain changes within the plant which in turn lead to flowering. Thus option B is the correct answer.
Vernalization stimulates flowering in
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Turmeric
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Carrot
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Yam
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Ginger
The key feature of vernalization is
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High temperature
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Low temperature
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Low moisture
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High humidity
In many plants, the temperature has a profound effect on flowering. Some plants do not flower under the inductive photoperiod conditions but flower when a cold temperature treatment is given to them. This acquisition or acceleration of the ability to flower by a chilling treatment is said to be vernalization. It is the method of inducing early flowering in plants by pretreatments of their seeds at a very low temperature. Thus option B is the correct answer.