How many of the given Statements are correct ?
A. National Botanical Institute is located at Lucknow .
B. Monographs help in identification of correct species.
C. Muscidae is the order of housefly.

Options

A. None
B. One
C. Two
D. All

Answer

To determine how many of the given statements are correct, we will analyze each statement one by one.

### Step 1: Analyze Statement A
**Statement A:** National Botanical Institute is located at Lucknow.

- The National Botanical Research Institute (NBRI) is indeed located in Lucknow, India. It is a research institute under the Council of Scientific and Industrial Research (CSIR) and is involved in the field of taxonomy and modern biology.
- **Conclusion:** This statement is correct.

### Step 2: Analyze Statement B
**Statement B:** Monographs help in identification of correct species.

- Monographs are detailed written studies that provide comprehensive accounts of a particular genus or family. They include information that aids in the identification and classification of species within that genus or family.
- **Conclusion:** This statement is also correct.

### Step 3: Analyze Statement C
**Statement C:** Muscidae is the order of housefly.

- Muscidae is actually the family to which the housefly (Musca domestica) belongs, not the order. The order of houseflies is Diptera.
- **Conclusion:** This statement is incorrect.

### Final Conclusion
- We have determined that:
- Statement A is correct.
- Statement B is correct.
- Statement C is incorrect.

Thus, **2 statements are correct**.

### Summary of Correct Statements
- **Correct Statements:** A and B
- **Incorrect Statement:** C

### Answer
**Two statements are correct.**

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