Question

The day-neutral plant is

• A. Tomato
• B. Tobacco
• C. Wheat
• D. Oat

Answer 1

The correct option is A

Tomato

The correct option is A.

Explanation of the correct option:

1. Photoperiodism is one of the mechanisms used by plants to sense changes in the length of the day and night using photoreceptor proteins and choosing when to initiate flowering.
2. Day-neutral plants can flower regardless of the amount of light or daylight.
3. They bloom irrespective of day length.
4. When they reach a specific developmental stage, day-neutral plants begin to flower.
5. It is not photoperiodism that causes the flowering in these plants.
6. Tomato, cucumber, cotton, dandelion, sunflower, and several pea types are more examples of day-neutral plants.

Explanation of the incorrect options:

Option (B):

1. Short-day plants are those that start flowering when the length of the day is below its critical length.
2. To flower, they need a longer time of darkness and a little time of light.
3. Tobacco is an example of Short-day plants.

Option (C):

1. Long-day plants are those that start flowering when the length of the day exceeds its critical length.
2. When they experience both a brief period of darkness and a longer period of light, they will flower.
3. Wheat is an example of a long-day plant.

Option (D):

1. Long-day plants are those that start flowering when the length of the day exceeds its critical length.
2. When they experience both a brief period of darkness and a longer period of light, they will flower.
3. Oat is an example of a long-day plant .

Final answer: The day-neutral plant is tomato.