Select the incorrect statement from the following.
I. NDRI is situated at Lucknow .
II. Plant families. Like convolvulaceae and solanaceae are included in the order polymoniales mainly based on the floral characters.
III. All living organisms such as from present , past and future are liked to one another by the sharing of the common genetic material but to varying degrees .
IV. The order Solanum, Datura and petunia are placed in family solanaceae .

Options

A. I only
B. II and IV only
C. IV only
D. II only

Answer

To solve the question, we need to evaluate each statement provided and identify which one is incorrect.

### Step-by-Step Solution:

1. **Evaluate Statement I**:
- "NDRI is situated at Lucknow."
- NDRI stands for the National Dairy Research Institute. The correct location of NDRI is Karnal, Haryana, not Lucknow.
- **Conclusion**: This statement is **incorrect**.

2. **Evaluate Statement II**:
- "Plant families like Convolvulaceae and Solanaceae are included in the order Polymoniales mainly based on the floral characters."
- The families Convolvulaceae and Solanaceae are indeed classified under the order Polymoniales, and their classification is based on floral and sexual characters.
- **Conclusion**: This statement is **correct**.

3. **Evaluate Statement III**:
- "All living organisms such as from present, past, and future are linked to one another by the sharing of the common genetic material but to varying degrees."
- This statement is accurate as all living organisms share common genetic material (DNA) to varying extents, reflecting their evolutionary relationships.
- **Conclusion**: This statement is **correct**.

4. **Evaluate Statement IV**:
- "The order Solanum, Datura, and Petunia are placed in family Solanaceae."
- Solanum, Datura, and Petunia are all members of the Solanaceae family. This classification is accurate.
- **Conclusion**: This statement is **correct**.

### Final Conclusion:
The only incorrect statement is **Statement I**: "NDRI is situated at Lucknow."