How many of the following statements is / are incorrect ?
A. Nuclear type of endosperm is the rarest type of endosperm ,in which the nucleus remains intact.
B. Cellular type of endosperm involves both karyokinesis and cytokinesis, simultaneously.
C. Cellular type of endosperm is found in coconut .

Options

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

Answer

To solve the question regarding the correctness of the statements about endosperm types, let's analyze each statement step by step.

### Step 1: Analyze Statement A
**Statement A:** "Nuclear type of endosperm is the rarest type of endosperm, in which the nucleus remains intact."

- **Analysis:** The nuclear type of endosperm is actually the most common type of endosperm formation. In this type, the primary endosperm nucleus undergoes multiple divisions to form several free nuclei before the cytoplasm divides. Therefore, this statement is incorrect.

### Step 2: Analyze Statement B
**Statement B:** "Cellular type of endosperm involves both karyokinesis and cytokinesis, simultaneously."

- **Analysis:** In the cellular type of endosperm, karyokinesis (nuclear division) occurs followed by cytokinesis (cytoplasmic division). However, these processes do not happen simultaneously; they occur in sequence. Thus, this statement is also incorrect.

### Step 3: Analyze Statement C
**Statement C:** "Cellular type of endosperm is found in coconut."

- **Analysis:** The cellular type of endosperm is indeed found in many plants, but in the case of coconut, it is primarily known for having a nuclear type of endosperm. Therefore, this statement is incorrect as well.

### Conclusion
Now, we can summarize the analysis of each statement:
- Statement A: Incorrect
- Statement B: Incorrect
- Statement C: Incorrect

Thus, all three statements are incorrect.

### Final Answer
The number of incorrect statements is **3**.

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