Considers the the following statements about Cleistogamy :
(i) Reported in viola , Oxalis , Commelina.
(ii) Flowers are invariably automatous.
(iii) pollinators are required for seed set.
(iv) Anthesis is absent .
How many statements are incorrect ?

Options

A. Four
B. Three
C. Two
D. One

Answer

To solve the question regarding the statements about Cleistogamy, we will analyze each statement one by one to determine their correctness.

### Step-by-step Solution:

1. **Understanding Cleistogamy**:
- Cleistogamy refers to a type of flowering where the flowers do not open at all. This means that all pollination occurs within the closed flower, leading to self-pollination.

2. **Analyzing Statement (i)**:
- **Statement**: Reported in Viola, Oxalis, Commelina.
- **Analysis**: Cleistogamy is indeed reported in these plants. Therefore, this statement is **correct**.

3. **Analyzing Statement (ii)**:
- **Statement**: Flowers are invariably automatous.
- **Analysis**: Since cleistogamous flowers do not open, they rely on self-pollination (autogamy). Thus, this statement is also **correct**.

4. **Analyzing Statement (iii)**:
- **Statement**: Pollinators are required for seed set.
- **Analysis**: In cleistogamous flowers, pollination occurs without the need for pollinators because the flowers remain closed. Therefore, this statement is **incorrect**.

5. **Analyzing Statement (iv)**:
- **Statement**: Anthesis is absent.
- **Analysis**: Anthesis refers to the opening of flowers. Since cleistogamous flowers do not open, anthesis is indeed absent. Thus, this statement is **correct**.

6. **Counting Incorrect Statements**:
- From the analysis, we found that out of the four statements, only **one statement (iii)** is incorrect.

### Final Answer:
- The number of incorrect statements is **1**.