In some_______, the leaf base may became swollen and is called as ________.

Options

A. a) monocots, sheathing leaf base
B. b) legumes, pulvinus
C. c) legumes, sheathing leaf base
D. d) monocots,pulvinus

Explanation

To answer the question, we need to fill in the blanks with the correct terms related to the morphology of flowering plants, specifically focusing on the leaf base characteristics in certain plant families.

### Step-by-Step Solution:

1. **Identify the Plant Family**: The question refers to a specific condition where the leaf base becomes swollen. This condition is commonly found in the family **Fabiaceae**, which includes leguminous plants.

2. **Define the Condition**: In the Fabiaceae family, the swollen leaf base is known as a **pulvinus**. This structure is significant as it plays a role in the movement of the leaves.

3. **Complete the Sentence**: Based on the information gathered, we can fill in the blanks in the question. The complete sentence would be: "In some **legumes**, the leaf base may become swollen and is called as **pulvinus**."

### Final Answer:
In some **legumes**, the leaf base may become swollen and is called as **pulvinus**.

---