Study the following statements and select the incorrect ones.
(i) 'Bt' in 'Bt cotton' indicates that it is a genetically modified crop produced through biotechnology
(ii) The anticoagulant 'hirudin' is being produced from transgenic Brassica napus seeds
(iii) 'Flavr Savr' transgenic tomatoes remain fresh for a longer period than the normal tomato variety
(iv) Golden rice is a transgenic variety of Oryza sativa, which is rich in `beta`-carotene and helps to prevent night blindness.

Options

A. (i) only
B. (i) and (iv)
C. (ii) and (iii)
D. (i),(ii),(iii) and (iv)

Explanation

To determine which statements are incorrect, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement (i):** 'Bt' in 'Bt cotton' indicates that it is a genetically modified crop produced through biotechnology.
- **Analysis:** The term 'Bt' actually stands for *Bacillus thuringiensis*, which is a bacterium that produces a toxin harmful to certain pests. While Bt cotton is indeed a genetically modified crop, the statement is misleading because it implies that 'Bt' solely indicates it is genetically modified, rather than specifying the source of the modification.
- **Conclusion:** This statement is **incorrect**.

2. **Statement (ii):** The anticoagulant 'hirudin' is being produced from transgenic Brassica napus seeds.
- **Analysis:** This statement is true. Hirudin is a protein that acts as an anticoagulant and has been successfully produced in transgenic Brassica napus (canola) seeds.
- **Conclusion:** This statement is **correct**.

3. **Statement (iii):** 'Flavr Savr' transgenic tomatoes remain fresh for a longer period than the normal tomato variety.
- **Analysis:** This statement is also true. The Flavr Savr tomato was genetically modified to delay ripening, allowing it to stay fresh longer than conventional tomatoes.
- **Conclusion:** This statement is **correct**.

4. **Statement (iv):** Golden rice is a transgenic variety of Oryza sativa, which is rich in beta-carotene and helps to prevent night blindness.
- **Analysis:** This statement is true. Golden rice is genetically modified to produce beta-carotene, which the body can convert into vitamin A, helping to prevent night blindness.
- **Conclusion:** This statement is **correct**.

### Final Conclusion:
The only incorrect statement is **(i)**. Therefore, the answer is that statement (i) is incorrect.

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