If you supply cannabis plants with more than 12 hours of light per day, then they will:

Question

BlackTom AI · Accepted Answer

Cannabis is a short-day (long-night) plant: it requires a sufficiently long uninterrupted dark period to trigger the hormonal change that initiates flowering. Photoperiod-responsive cannabis plants remain in vegetative growth when nights are too short.

1) Relevant knowledge points and concepts
- Photoperiodism: many plants use day/night length to time flowering. Cannabis is typically short-day: flowering begins when dark period exceeds a critical length (around 12 hours for many cultivars).
- Vegetative vs. flowering stages: vegetative growth occurs under long-day/short-night schedules (e.g., 18 h light / 6 h dark); flowering is usually induced by 12 h light / 12 h dark or longer nights.
- Exception: autoflowering varieties flower with age independent of light cycle.

2) Step-by-step reasoning
- The day length condition given: "more than 12 hours of light per day."
- Compute the corresponding dark period: dark hours = 24 − light hours.
  Example calculations:
  - If light = 13 h, dark = 24 − 13 = 11 h (dark < 12 h).
  - If light = 18 h, dark = 24 − 18 = 6 h (dark < 12 h).
  - If light = 24 h, dark = 0 h (dark << 12 h).
- For photoperiod cannabis, flowering is triggered when dark ≥ ~12 hours. In each example above the dark period is less than 12 hours, so the flowering trigger is not met.

3) Intermediate steps shown above (light → subtract from 24 → dark hours → compare to 12-hour threshold).

4) Why the correct answer is correct
Because supplying more than 12 hours of light necessarily gives less than 12 hours of darkness, the plant does not experience the long-night signal needed to switch from vegetative to flowering growth. Therefore it will stay in the vegetative stage.

5) Why other options are incorrect
- "start to flower": incorrect for photoperiod strains because nights are too short to induce flowering. It would only be correct if light were reduced to ~12 h or if the plants were autoflowering.
- The options labeled "No answer text provided." are non-answers and thus incorrect.

6) Conclusion
Given the photoperiod mechanism and the arithmetic shown, the correct outcome is that plants will stay vegetative — confirming the provided answer: "stay vegetative."

If you supply cannabis plants with more than 12 hours of light per day, then they will:单项选择题

类似问题

If a plant that has adapted to very long days is planted in a tropical region where day length is constant year-round, it would most likely

What would you expect to see if a winter type plant in a vegetative growth state was exposed to long days?

Cannabis is typically a _____ day flowering plant.

Why did the researchers avoid studying students' sleep habits around final exams and term papers?

What was the average amount of sleep students in the study got per night?

According to the study, what is the impact on a student's GPA for every hour of average nightly sleep lost at the start of an academic term?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单