Unbranched stems and pinnate leaves are characteristic features of

Options

A. Pinus
B. Sequoia
C. Cycas
D. Cedrus

Answer

To solve the question regarding which plant exhibits unbranched stems and pinnate leaves, we can follow these steps:

### Step 1: Understand the Characteristics
- We need to identify the characteristics mentioned in the question: unbranched stems and pinnate leaves.
- Unbranched stems refer to a stem structure that does not have lateral branches, while pinnate leaves are compound leaves that have leaflets arranged on either side of a common axis (rachis).

### Step 2: Analyze the Options
- The question provides multiple options, all of which belong to the Gymnosperms group. We need to analyze each option based on the characteristics given.
- Common examples of Gymnosperms include Pinus, Cycus, Sequoia, and Cedrus.

### Step 3: Identify Each Plant's Features
1. **Pinus**:
- Typically has a branched shoot system.
- Leaves are needle-like and can be considered as simple or fascicled, not pinnate.

2. **Cycus**:
- Known for its unbranched stem.
- Exhibits pinnate leaves, where leaflets arise from a common axis.

3. **Sequoia**:
- A tall tree with a branched stem.
- Leaves are needle-like and not pinnate.

4. **Cedrus**:
- Also has a branched stem.
- Leaves are needle-like and not pinnate.

### Step 4: Conclusion
- Based on the analysis, the only plant that has both unbranched stems and pinnate leaves is **Cycus**.
- Therefore, the correct answer is **C** (Cycus).