The number of common characters among organisms

Options

A. Decreases ( Angiospermae to Triticum )
B. Increase ( Monocotyledone to Plantae
C. Increases ( sapindales to Angiospermae)
D. Decreases ( poaceae to Plantae )

Answer

To solve the question regarding the number of common characters among organisms, we will analyze the options given and determine whether the common characters increase or decrease as we move from one classification to another.

### Step-by-Step Solution:

1. **Understanding the Terms**:
- We need to understand the classifications mentioned in the options. For instance, "angiosperm" refers to flowering plants, while "trichome" refers to a specific structure found on some plants (like wheat).
- "Monocotyledons" are plants that have one seed leaf (cotyledon), while "dicotyledons" have two.

2. **Analyzing the First Option**:
- The first option compares angiosperms to trichomes. Since trichomes are structures found on angiosperms, the common characters would actually increase, not decrease. Therefore, this option is incorrect.

3. **Analyzing the Second Option**:
- The second option compares monocotyledons to a broader category of plants. Monocotyledons are a specific subset of plants, so moving from a specific group to a broader classification would typically mean a decrease in common characters. Thus, this option is also incorrect.

4. **Analyzing the Third Option**:
- The third option compares Spaniedales (a group of dicots) to angiosperms. Since both belong to the same broader category (angiosperms), the common characters would remain relatively stable, not necessarily increasing or decreasing. Therefore, this option is not the correct answer.

5. **Analyzing the Fourth Option**:
- The fourth option compares Poesia (a family of grasses) to Plantae (the kingdom of plants). As we move from a specific family (Poesia) to a broader category (Plantae), the number of common characters decreases because Plantae includes a vast range of plant types, many of which do not share the specific characteristics of grasses. Thus, this option is correct.

### Conclusion:
The correct answer is the fourth option, which indicates a decrease in common characters when moving from Poesia to Plantae.

---