In transgenic crop substance provitamin A is obtained in….

Options

A. rice
B. tomato
C. canola
D. sugarcane

Answer

**Step-by-Step Solution:**

1. **Understanding Transgenic Crops**: Transgenic crops are genetically modified organisms (GMOs) that have had a specific gene inserted into their genome to express desired traits. These traits can include resistance to pests, tolerance to herbicides, or enhanced nutritional content.

2. **Provitamin A**: Provitamin A refers to carotenoids, such as beta-carotene, which can be converted into vitamin A in the body. Vitamin A is essential for various bodily functions, including vision, immune function, and skin health.

3. **Transgenic Rice**: One of the most notable examples of a transgenic crop that produces provitamin A is "Golden Rice." This rice variety has been genetically engineered to contain higher levels of beta-carotene, making it a potential solution for vitamin A deficiency, particularly in developing countries.

4. **Impact on Health**: The introduction of Golden Rice aimed to reduce vitamin A deficiency, which can lead to serious health issues, including blindness. By consuming rice enriched with provitamin A, populations at risk can improve their vitamin A intake.

5. **Historical Context**: Golden Rice was developed during the Green Revolution, a period characterized by significant advancements in agricultural technology and crop yields. The introduction of such crops has contributed to improved nutrition and food security.

6. **Conclusion**: Therefore, the substance provitamin A is obtained in transgenic crops, specifically in rice, which is the correct answer.

**Final Answer**: Provitamin A is obtained in transgenic crops, specifically in rice.

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