Cabbage is a biennial plant which produces flowers in second year of growth. In an attempt to make it flower in a single year, four potted plants (I,II, II, and IV) of cabbage were subjected to different temperatures for several days as given in the table.
`|{:("Potted plant","Temperature"),(I,5^(@)C),(II,20^(@)C),(III,30^(@)C),(IV,25^(@)C):}:|`
Which potted plant will show flowering ?

Options

A. I
B. II
C. III
D. IV

Explanation

To determine which potted plant will show flowering, we need to analyze the conditions under which cabbage, a biennial plant, can flower. Here's a step-by-step solution:

### Step 1: Understand the Growth Cycle of Cabbage
Cabbage is a biennial plant, meaning it typically takes two years to complete its life cycle. In the first year, it undergoes vegetative growth, developing leaves and shoots, while flowering occurs in the second year.

**Hint:** Remember that biennial plants have a two-year growth cycle, with flowering in the second year.

### Step 2: Identify the Requirement for Flowering
For cabbage to flower in a single year, it requires a process called vernalization, which is the exposure to low temperatures. The ideal temperature range for vernalization in cabbage is between 0°C to 5°C.

**Hint:** Vernalization is crucial for biennial plants to induce flowering; check the temperature conditions provided.

### Step 3: Analyze the Temperature Conditions of Each Potted Plant
The temperatures for each potted plant are as follows:
- Plant I: 5°C
- Plant II: 20°C
- Plant III: 30°C
- Plant IV: 25°C

**Hint:** Compare the temperatures of each plant to the ideal vernalization range.

### Step 4: Determine Which Plant is Subjected to Ideal Temperature
From the analysis:
- Plant I is at 5°C, which is within the vernalization range.
- Plant II (20°C), Plant III (30°C), and Plant IV (25°C) are all above the required range for vernalization.

**Hint:** Only the plant at the temperature that meets the vernalization requirement will be able to flower.

### Step 5: Conclusion
Based on the temperature conditions, only Plant I, which is subjected to 5°C, will show flowering as it meets the vernalization requirement.

**Final Answer:** Potted Plant I will show flowering.