Which of the following statements regarding photoperiodism is false

Options

A. The response of plants to periods of light/day is termed as photoperiodism
B. The shoot apices cannot perceive photoperiods
C. In day neutral plants there is no correlation between exposure to light duration and induction of flowering response
D. The site of perception of light/dark duration is the flower.

Answer

To determine which statement regarding photoperiodism is false, we will analyze each option provided in the question.

### Step 1: Understand Photoperiodism
Photoperiodism is the response of plants to the lengths of day and night. It plays a crucial role in regulating flowering and other developmental processes in plants.

**Hint:** Remember that photoperiodism is related to how plants respond to light and dark periods.

### Step 2: Analyze the Statements
1. **Statement 1:** "The response of plants to periods of light or day is termed as photoperiodism."
- This statement is true. Photoperiodism is indeed defined as the response of plants to the duration of light and dark periods.

**Hint:** Confirm that the definition of photoperiodism aligns with this statement.

2. **Statement 2:** "The shoot apices cannot perceive photoperiodism periods."
- This statement is also true. While the shoot apices are involved in flowering, they do not directly perceive the light and dark periods.

**Hint:** Consider where the perception of light actually occurs in plants.

3. **Statement 3:** "In day-neutral plants, there is no correlation between exposure to light duration and induction of flowering response."
- This statement is true. Day-neutral plants flower regardless of the length of day or night.

**Hint:** Think about how day-neutral plants differ from short-day and long-day plants.

4. **Statement 4:** "The site of perception of light and dark duration is the flowers."
- This statement is false. The actual site of perception for light and dark duration in plants is the leaves, not the flowers.

**Hint:** Recall which part of the plant is responsible for sensing environmental light conditions.

### Step 3: Identify the False Statement
From the analysis, we find that the fourth statement is false. The correct understanding is that the leaves are responsible for perceiving light and dark durations, not the flowers.

### Conclusion
The false statement regarding photoperiodism is: "The site of perception of light and dark duration is the flowers."

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