On which of the following is the artificial system of classification based?

Options

A. Habit, colour, number and shape of leaves
B. Androecium structure
C. Cytological information such as chromosome number structure
D. Both (A) and (B)

Answer

To solve the question regarding the basis of the artificial system of classification, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Artificial Classification**:
- The artificial system of classification is primarily based on observable and easily measurable characteristics of organisms, particularly plants. This includes external features rather than genetic or cytological data.

2. **Analyzing the Options**:
- **Option A**: Habit, color, number, and shape of leaves.
- This option refers to morphological characteristics, which are indeed used in artificial classification.
- **Option B**: Androsium structure.
- This option refers to the reproductive structures of plants (stamens and carpels), which are also key features in artificial classification.
- **Option C**: Cytological information such as chromosome number and structure.
- This option involves genetic and cytological data, which are not typically used in artificial classification.
- **Option D**: Both A and B.
- This option suggests that both the morphological characteristics and the androsium structure are used in artificial classification.

3. **Identifying the Correct Answer**:
- Since options A and B are both valid bases for artificial classification, and option C is not, the correct answer is option D: Both A and B.

### Final Answer:
The artificial system of classification is based on: **Both A and B** (Habit, color, number and shape of leaves, and androsium structure).

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