Pinus belongs to the class

Options

A. gnetopsida
B. cycadopsida
C. coniferopsida
D. sphenopsida

Answer

To determine the class to which Pinus belongs, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: Pinus is a genus that includes various species of coniferous trees, commonly known as pines.

2. **Understand the Classification**: In biological classification, organisms are grouped into hierarchical categories such as kingdom, phylum, class, order, family, genus, and species.

3. **Recognize the Group**: Pinus is part of the group known as gymnosperms, which are seed-producing plants that do not form flowers or fruits.

4. **Identify the Class**: Within gymnosperms, there are several classes. Pinus specifically belongs to the class Coniferopsida, which includes all conifers.

5. **Eliminate Incorrect Options**: The other options provided (Netopsida, Cycadopsida, Corniphiropsida, and Phenopsida) do not include Pinus.
- Netopsida includes plants like Natuum and Aphidra.
- Cycadopsida includes cycads like Cycas.
- Corniphiropsida and Phenopsida do not relate to Pinus.

6. **Conclude the Answer**: Therefore, the correct answer is that Pinus belongs to the class **Coniferopsida**.

### Final Answer:
**Pinus belongs to the class Coniferopsida.**

---