Which is not true of monocots

Options

A. Parallel venation
B. Single seed leaf
C. Floral parts in multiples of `4-5`
D. Adventitious roots.

Answer

To determine which statement is not true of monocots, we can analyze each option provided in the question:

1. **Option A: Parallel venation**
- Monocots typically exhibit parallel venation in their leaves. This means that the veins run parallel to each other along the length of the leaf. This statement is true for monocots.

2. **Option B: Single seed leaf**
- Monocots are characterized by having one cotyledon, which is often referred to as a single seed leaf. This is a defining feature of monocots. Therefore, this statement is also true.

3. **Option C: Floral parts in multiples of 4 and 5**
- Monocots usually have floral parts in multiples of three. This means that if you look at the flowers of monocots, you will typically find petals, sepals, and other floral structures in groups of three. The statement that floral parts are in multiples of 4 and 5 is not true for monocots; this is a characteristic of dicots. Hence, this statement is false.

4. **Option D: Adventitious roots**
- Monocots often develop adventitious roots, which are roots that arise from parts of the plant other than the main root (radical). This is a common feature in plants like grasses. Therefore, this statement is true.

Based on this analysis, the statement that is not true of monocots is **Option C: Floral parts in multiples of 4 and 5**.

### Final Answer:
The correct answer is **Option C**.

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