Vernalisation

Q.

Which hormone is responsible for flowering?

Q. If winter varieties are planted in spring, then they

1. produce flowers normally
2. do not need vernalization
3. can not produce flowers and mature grains
4. produce grains like spring variety

Q.

What do you understand by photoperiodism and vernalisation? Describe their significance.

Q. The promotion of flowering by providing exposure to a period of low temperature is referred to as .

1. thermoperiodism
2. photoperiodism
3. vernalisation
4. phototropism

Q.

What are the requirements of Vernalization?

Q.

Which hormone stimulates the production of flowers in plants?

Q.

Vernalization stimulates flowering in

1. Turmeric

2. Jimikand

3. Ginger

4. Carrots

Q.

Using low temperature to promote flowering in plants is called _____.

1. Vernalization

2. Photoblast

3. None of the above

4. Photoperiodism

Q. Stimulus of low temperature in vernalisation is perceived by

1. pericarp
2. leaves
3. embryo of the seed
4. flower

Q. Match the following plant varieties to their respective descriptions: $\begin{array}{cc}\text{i. Winter variety}& \text{1. Planted in spring, grows till winter,}\\ & \text{flowers and forms seeds in the next year.}\\ \text{ii. Spring variety}& \text{2. Planted in autumn, germinates in}\\ & \text{winter, grows in spring, and}\\ & \text{harvested usually during mid-summer.}\\ \text{iii. Biennial variety}& \text{3. Planted in spring and}\\ & \text{harvested during autumn.}\end{array}$

1. i-2, ii-3, iii-1
2. i-3, ii-2, iii-1
3. i-1, ii-3, iii-2
4. i-1, ii-2, iii-3

Q.

Which of the following is an example of plants undergoing vernalization?

1. Sugarbeet

2. Carrot

3. Cabbage

4. All of the above

Q. Identify the set of biennial monocarpic plants

1. Wheat, Rye, Barley

2. Beet, Rice, Carrot

3. Cabbage, Radish, Wheat

4. Carrot, Cabbage, Beet

Q.

How long is the auto-flowering seedling stage?

Q.

Vernalisation stimulates flowering in

1. Jimikand

2. Turmeric

3. Carrot

4. Ginger

Q.

Nectar of flower is the main food of a butterfly.

1. True
2. False

Q. Select the incorrect match from the following:

1. Day-neutral plants- No correlation between duration of light exposure and flowering
2. Photoperiodism- Plants respond to the length of day and night
3. Vernalisation- Plants respond to any temperature
4. Seed Dormancy- Temporary suspension of seed germination

Q.

Which of the following should be used as an explant to generate a disease-free plant?

1. Ovary cell

2. Anther

3. Young embryo

4. Shoot tip

Q. Which among the following hormones can replace vernalization?

1. Auxin
2. Gibberellin
3. Cytokinin
4. Auxin + Cytokinin

Q.

Who first used the term photorespiration?

1. Pasteur

2. Krebs

3. Warburg

4. Decker

Q. Why are plants obtained by protoplast culture called somatic hybrids?

Q. Find the odd one out.

1. Cabbage
2. Wheat
3. Carrot
4. Sugarbeet

Q.

Who Discovered Florigen?

Q. What is the difference between annual and biennial plants

Q. Which of the following statements is/are correct?

i. At a given place, both long day and short-day plants can flower simultaneously.

ii. Life span of a cabbage plant is nearly two years.

iii. Carrots are polycarpic plants.

1. Both i and ii
2. Both i and iii
3. Only iii
4. Only i

Q. If an Indian farmer wants to harvest a winter variety of wheat in June next year, then which of the following months is suitable for planting the crop this year?

1. March
2. May
3. April
4. September

Q.

It is known that some varieties of wheat are sown in autumn but are harvested around next mid summer.

A. What could be the probable reason for this?

B. What term is used for this promotion of lowering under low temperature?

C. Which plant hormone can replace the cold treatment?

Q. Vernalization is applicable to plants like ______.

1. Narcissus
2. Eucalyptus
3. Chrysanthemum
4. Gladiolus

Q. Which of the following is a gaseous plant growth hormone?

1. Kinetin
2. ABA/CK
3. GA
4. Ethylene

Q.

Will a damaged seed grow?

Q. Due to bad weather, winter wheat crops did not survive and perished. A scientist came up with the idea to prevent this from happening in the future. What technique could he have possibly employed to make that happen?

1. Pruning
2. Use of high saline soil
3. Vernalization
4. None of the above