Tag: plant growth and development

Questions Related to plant growth and development

Flowering dependent on cold treatment is

  1. Cryotherapy

  2. Cryogenics

  3. Cryoscopy

  4. Vernalisation


Correct Option: D
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged cold or winter. The term was coined by Lysenko in 1928. He stated that certain plants can be made to flower by providing cold treatment to young plants or moistened seeds.

Thus, the correct answer is option D.

Vernalisation is

  1. Growth curve related to light

  2. Effect of photoperiods on plant growth

  3. Speeding up ability to flower by low temperature treatment

  4. Diurnal photoperiodicity


Correct Option: C
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged cold of winter. The term was coined by Lysenko in 1928. He stated that certain plants can be made to flower by providing low temperature treatment to young plants or moistened seeds. Other terms like jarovization, springification were also coined for the same phenomenon. However, today the most accepted term is vernalization.

Thus, the correct answer is option C.

Low temperature treatment of some semigerminated seeds for some period often induces subsequently quicker flowering in plants. This process is called

  1. Vernalization

  2. Thermolysis

  3. Wintering

  4. Devernalization


Correct Option: A
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged period of low temperature or cold. After this, plants show quicker flowering. The term was coined by Lysenko in 1928. He stated that certain plants can be made to flower by providing low temperature treatment to young plants or semigerminated seeds.

Thus, the correct answer is option A.

The practice of subjecting seeds to low temperatures for a period of time in order to cause growth and flowering during summer season is called as 

  1. Wintering

  2. Vernalization

  3. Devernalization

  4. Thermolysis


Correct Option: B
Explanation:

Vernalization is the artificial exposure of plants to low temperatures in order to stimulate flowering or to enhance seed production. By satisfying the cold requirement of many temperate zone plants, flowering can be induced to occur earlier than normal or in warm climates lacking the requisite seasonal chilling.

The process of vernalisation is

  1. Aerobic

  2. Anaerobic

  3. Unaffected by aerobic or unaerobic conditions

  4. Dependent upon starvation conditions


Correct Option: A
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged cold or winter. The term was coined by Lysenko in 1928. He stated that certain plants can be made to flower by providing low temperature treatment to young plants or moistened seeds. It is an aerobic process and requires metabolic energy obtained from oxygen.

Thus, the correct answer is 'Aerobic'.

Vernalisation promotes flowering in response to

  1. High light intensity

  2. Low temperature

  3. High temperature

  4. Low light intensity


Correct Option: B
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged cold of winter. The term was coined by Lysenko in 1928.  He stated that certain plants can be made to flower by providing low temperature treatment to young plants or moistened seeds. Other terms like jarovization, springification were also coined for the same phenomenon. 

Thus, the correct answer is option B.

The term "vernalisation" was coined by

  1. Garner and Allard

  2. Darwin

  3. Geoffery

  4. Lysenko


Correct Option: D
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged cold or winter. The term was coined by Lysenko in 1928. He stated that certain plants can be made to flower by providing low temperature treatment to young plants or moistened seeds.

Thus, the correct answer is option D.

Hormone responsible for vernalization is

  1. Florigen

  2. Colchicine

  3. Abscisin

  4. Vernalin


Correct Option: D
Explanation:

Vernalization is the process by which plant can be induced to flower by exposing it to the prolonged cold of winter. Plants can be made to flower by providing low temperature treatment to young plants or moistened seeds. Vernalin is a plant hormone that is produced on vernalization. It induces flowering in plants.

Thus, the correct answer is option D.

Low temperature treatment to speed up the process of flowering is referred to as

  1. Photoperiodism

  2. Vernalisation

  3. Thermoperiodism

  4. Hydroponics


Correct Option: B
Explanation:
Vernalisation is the process of shortening of the juvenile or vegetative phase and hastening flowering by a previous cold treatment. In vernalization by cold treatment, winter varieties are transferred into spring or summer varieties. The site of vernalization is apical meristem or all the meristematic cells e.g., shoot tip, embryo tips, root apex etc.  The low temperature required for vernalization is usually $0^o-5^oC$. As a result of vernalization, a flowering hormone called vernalin is formed (reported by Melchers), but vernalin has never been isolated.
So the correct option is 'vernalization'.

Which one hastens flowering in plants?

  1. Stratification

  2. Scarification

  3. Vernalisation

  4. Water deficit


Correct Option: C
Explanation:

Vernalisation is the process of that hastens to flower in plants by cold treatment. With the help of artificial cold treatment, winter wheat seeds can be induced to flower. 

Thus, the correct answer is option C.