Characteristic of series thalamiflorae is

Options

A. Absence of disc below ovary
B. Presence of nectariferous disc below ovary
C. Presence of non-nectariferous disc below ovary
D. Occurrence of gynophore.

Answer

### Step-by-Step Text Solution:

1. **Understanding the Series Thalamiflorae**: The series Thalamiflorae is a classification within the plant kingdom that includes various flowering plants. It is important to know the defining characteristics of this series to answer the question accurately.

2. **Identifying Key Characteristics**: One of the main characteristics of Thalamiflorae is the structure of the ovary and the presence or absence of certain floral structures.

3. **Absence of Disc**: The key characteristic of the series Thalamiflorae is the **absence of a disc-like structure below the ovary**. This means that unlike some other plant series, Thalamiflorae do not have a disc that can be found beneath the ovary.

4. **Incorrect Options**:
- The presence of an active furious discovery is incorrect.
- The occurrence of gynopathy is also incorrect.
- Therefore, the only correct characteristic is the absence of the disc below the ovary.

5. **Conclusion**: The defining characteristic of the series Thalamiflorae is the **absence of a disc-like structure below the ovary**.