Which one pair of examples will correctly represent the grouping Spermatophyta according to one of the schemes of classifying plants : -

Options

A. Acacia, Sugarcane
B. Pinus, Cycas
C. Rhizopus, Triticum
D. Ginkgo, Pisum

Answer

To solve the question regarding which pair of examples correctly represents the grouping of Spermatophyta, we need to analyze the options provided and identify which ones consist solely of angiosperms (flowering plants) or gymnosperms (non-flowering seed plants).

### Step-by-Step Solution:

1. **Understanding Spermatophyta**:
- Spermatophyta refers to seed-producing plants, which include both angiosperms (flowering plants) and gymnosperms (non-flowering plants).
- For this question, we need to identify pairs that consist of either angiosperms or gymnosperms.

2. **Analyzing the Options**:
- **Option A: Acacia and Sugarcane**
- Acacia is a genus of flowering plants (angiosperms).
- Sugarcane is also an angiosperm.
- Therefore, both examples in this option are angiosperms.

- **Option B: Pinus and Cycas**
- Pinus is a genus of gymnosperms (conifers).
- Cycas is also a gymnosperm (cycad).
- Both examples in this option are gymnosperms.

- **Option C: Rhizopus and Triticum**
- Rhizopus is a fungus, not a plant.
- Triticum (wheat) is an angiosperm.
- This option is invalid as it contains a non-plant organism.

- **Option D: Ginkgo biloba and Pisum sativum**
- Ginkgo biloba is a gymnosperm.
- Pisum sativum (pea plant) is an angiosperm.
- This option contains both types of plants, making it invalid.

3. **Conclusion**:
- The only option that consists of two examples from the same group (angiosperms) is **Option A: Acacia and Sugarcane**.
- Therefore, the correct answer is **Option A**.