Genetically modified plants have been useful in increasing:
(a) Crop yield
(b) Nutritional value of food
(c) Tolerance against abiotic stresses
(d) All of the above

Options

A. Crop yield
B. Nutritional value of food
C. Tolerance against abiotic stresses
D. All of the above

Answer

To solve the question regarding the usefulness of genetically modified plants, we can analyze each option provided:

1. **Understanding Genetically Modified Plants**: Genetically modified (GM) plants are created by altering the genetic makeup of the plant to achieve desired traits. These modifications can enhance various characteristics of the plants.

2. **Analyzing Each Option**:
- **Option (a): Crop yield**: GM plants are known to be engineered to increase crop yield. This means that they can produce more food per unit area, which is crucial for feeding the growing population.
- **Option (b): Nutritional value of food**: GM crops can be modified to enhance their nutritional content. For example, Golden Rice is genetically modified to contain higher levels of Vitamin A, addressing nutritional deficiencies in some populations.
- **Option (c): Tolerance against abiotic stresses**: GM plants can be designed to withstand abiotic stresses such as drought, salinity, and extreme temperatures. This allows them to survive and thrive in challenging environmental conditions.
- **Option (d): All of the above**: Since options (a), (b), and (c) are all valid uses of genetically modified plants, this option suggests that GM plants are beneficial in all these aspects.

3. **Conclusion**: Since genetically modified plants have been shown to increase crop yield, enhance nutritional value, and provide tolerance against abiotic stresses, the correct answer is:
- **(d) All of the above**