Unbranched stems and pinnate leaves are characteristic features of
(a) Pinus
(b) Sequoia
(c) Cycas
(d) Cedrus

Options

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

Answer

To solve the question regarding which plant has unbranched stems and pinnate leaves, we will evaluate each option provided:

1. **Understanding the Characteristics**:
- We need to identify which of the listed plants has unbranched stems and pinnate leaves.
- Unbranched stems mean the plant does not have side branches extending from the main stem.
- Pinnate leaves are characterized by leaflets arranged on either side of a central axis.

2. **Analyzing Each Option**:
- **(a) Pinus**:
- Pinus is a genus of coniferous trees commonly known as pines.
- They typically have branched stems and needle-like leaves, which are not pinnate.
- Therefore, Pinus does not fit the criteria.

- **(b) Sequoia**:
- Sequoia, known as redwoods, also have branched stems and needle-like leaves.
- Like Pinus, they do not possess unbranched stems.
- Thus, Sequoia is not the correct answer.

- **(c) Cycas**:
- Cycas is a genus of cycads, which are often mistaken for palms.
- They have a stout trunk (which can be unbranched) but typically have compound leaves that are not pinnate.
- Therefore, Cycas does not meet the criteria.

- **(d) Cedrus**:
- Cedrus, commonly known as cedars, are coniferous trees that can have unbranched stems.
- They possess needle-like leaves that can be arranged in a pinnate fashion.
- Thus, Cedrus fits the criteria of having unbranched stems and pinnate leaves.

3. **Conclusion**:
- After evaluating all options, the correct answer is **(d) Cedrus**.