Tag: growth and development

Questions Related to growth and development

Vernalization treatment can convert

  1. A biennial into an annual

  2. A spring variety into a winter variety

  3. An annual into a perennial

  4. All of these


Correct Option: D
Explanation:

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.

So the correct option is 'All of these.'

Vernalization is

  1. Growth curve related to light

  2. Effect of photoperiods on plant growth

  3. Speeding up ability to flower by low temperature

  4. Diurnal photoperiodicty


Correct Option: C
Explanation:

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

  1. Seasonal pathway

  2. Light dependent pathway

  3. Temperature dependent pathway

  4. None of the above


Correct Option: C

Which of the following can shorten the vegetative period of plants?

  1. Vernalization

  2. Apical meristem

  3. Germination

  4. All of the above


Correct Option: A

Which of the following can replace the cold treatment for inducing flowering?

  1. Auxin

  2. Gibberellin

  3. Cytokinin

  4. None of the above


Correct Option: B
Explanation:

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

  1. Turmeric

  2. Carrot

  3. Yam

  4. Ginger


Correct Option: B

The key feature of vernalization is

  1. High temperature

  2. Low temperature

  3. Low moisture

  4. High humidity


Correct Option: B
Explanation:

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. 

The application of vernalization is

  1. Crop improvement

  2. Resistant to fungal disease

  3. Reduces cost of production

  4. All of the above


Correct Option: D
Explanation:


Vernalization (from Latin vernus, "of the spring") is the induction of a plant's flowering process by exposure to the prolonged cold of winter. After vernalization, plants have acquired the ability to flower. Through this process the quality of the crops can be improved, it helps to keep away the plants from the fungal disease and also helps to reduce the cost of the production.
So, the correct answer is option D.

The phenomena of vernalization is discovered by the

  1. Gassner

  2. Lysenko

  3. Pristely

  4. None of the above


Correct Option: A

Which of the following can converts winter variety crop plants into spring variety?

  1. Photoperiodism

  2. Vernalization

  3. Differentiation

  4. Sacrification


Correct Option: B
Explanation:

During spring season the cool-season crops plants have enough time to reach maturity before the weather turns warm. Vernalization if the process of cooling the seed to germinate and induce flowering process.

So the correct option is 'Vernalization.'