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Leaf base expands into a sheath in...

Leaf base expands into a sheath in

A

Grasses

B

Legumes

C

Prickly poppy

D

Mimosa

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Leaf Base**: The leaf base is the part of the leaf that attaches to the stem. In some plants, this base can expand and form a structure that envelops the stem. 2. **Identifying Types of Leaf Bases**: There are different types of leaf bases in plants. In monocots, such as grasses, the leaf base can expand and form a sheath around the stem. 3. **Recognizing Sheathing Leaf Bases**: A sheathing leaf base is characterized by its broad structure that wraps around the stem. This is commonly found in monocotyledons (monocots) like grasses. 4. **Examples of Grasses**: Common examples of grasses that exhibit this feature include wheat, maize, and other grass species. The sheathing leaf base serves to protect the intercalary meristem, which is important for the growth of the plant. 5. **Evaluating Other Options**: - **Legumes**: These are dicots and do not have sheathing leaf bases. - **Prickly Poppy**: This is also a dicot and does not exhibit this feature. - **Mimosa**: Another flowering plant that is a dicot and lacks a sheathing leaf base. 6. **Conclusion**: Based on the characteristics of leaf bases and the examples provided, the correct answer to the question is "grasses." **Final Answer**: The leaf base expands into a sheath in grasses. ---
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