Which of the following pair is incorrectly matched?

Options

A. Calotropis - Valvate aestivation
B. Leucas-Oldest flower is in dichasial cyme
C. Jasmine -- 3 flowered cymose inflorescence
D. Silk cotton - Many leaflets on rachis

Answer

To determine which of the following pairs is incorrectly matched, we will analyze each option one by one.

### Step 1: Analyze the first option - Callotropis and Velvet Estivation
- **Callotropis** is a flowering plant commonly known as milkweed, which produces latex.
- **Velvet Estivation** refers to the arrangement of floral leaves where they touch only at the margins without overlapping.
- Callotropis is known to exhibit velvet estivation.
- **Conclusion**: This pair is correctly matched.

### Step 2: Analyze the second option - Leucas and Dichasial Syme
- **Leucas**, commonly known as Thumbai, is a flowering plant.
- **Dichasial Syme** is a type of inflorescence where all branches terminate in flowers.
- Leucas aspera shows this type of inflorescence.
- **Conclusion**: This pair is correctly matched.

### Step 3: Analyze the third option - Jasmine and 3 Flowered Simos Inflorescence
- **Jasmine** is a flowering plant.
- **Simos Inflorescence** is characterized by the main axis terminating in flowers, with flowers arranged at the apex.
- Jasmine indeed exhibits this type of inflorescence.
- **Conclusion**: This pair is correctly matched.

### Step 4: Analyze the fourth option - Silk Cotton and Many Leaflets on Rachis
- **Silk Cotton** refers to a plant with palmately compound leaves.
- **Palmately Compound** means that the leaflets are attached to a common point (leaf stalk).
- The description given in the option states "many leaflets on rachis," which is incorrect for palmately compound leaves. Instead, this describes pinnately compound leaves.
- **Conclusion**: This pair is incorrectly matched.

### Final Answer:
The incorrectly matched pair is **Option 4: Silk Cotton and Many Leaflets on Rachis**.

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