Which of the following is an incorrect contrast between monocots (stated first) and dicots (stated second) ?

Options

A. One cotyledon-two cotyledons
B. Leaf veins parallel-net veined
C. Vascular bundles in a ring-vascular bundles scattered
D. Flower parts in threes—flower parts in fours or fives

Explanation

To determine which of the following contrasts between monocots and dicots is incorrect, we need to analyze each option based on the characteristics of these two groups of flowering plants.

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Monocots**: Plants that have one cotyledon in their seeds.
- **Dicots**: Plants that have two cotyledons in their seeds.

2. **Analyze the Options**:
- **Option A**: "One cotyledon" (monocots) vs. "Two cotyledons" (dicots).
- This statement is **correct**.
- **Option B**: "Leaf veins parallel" (monocots) vs. "Net veins" (dicots).
- This statement is **correct**.
- **Option C**: "Vascular bundles in ring" (dicots) vs. "Vascular bundles scattered" (monocots).
- This statement is **incorrect**. The correct contrast is that vascular bundles are arranged in a ring in dicots and scattered in monocots.
- **Option D**: "Floral parts in three" (monocots) vs. "Floral parts in 4 or 5" (dicots).
- This statement is **correct**.

3. **Identify the Incorrect Contrast**:
- From the analysis, **Option C** is the incorrect contrast as it reverses the arrangement of vascular bundles in monocots and dicots.

### Conclusion:
The incorrect contrast between monocots and dicots is found in **Option C**: "Vascular bundles in ring" (dicots) vs. "Vascular bundles scattered" (monocots).

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