Reproduction which does not involve gametic union is

Options

A. Paarasexual reproduction
B. Apomixis
C. Parthenogenesis
D. Agamospermy.

Answer

To solve the question "Reproduction which does not involve gametic union is:", we will analyze the options provided and determine which one fits the criteria of not involving the fusion of gametes.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify a type of reproduction that occurs without the fusion of male and female gametes.

2. **Analyze the Options**:
- **a. Parasexual reproduction**: This type of reproduction involves processes like transformation and transduction, which may involve genetic material exchange but do not strictly involve gametic union. However, it is not the best fit for the question.

- **b. Apomyxis**: This is a form of asexual reproduction where seeds are produced without fertilization. In apomyxis, the embryo develops directly from the somatic cells of the parent plant, and there is no fusion of gametes. This option fits the criteria perfectly.

- **c. Parthenogenesis**: This is a form of asexual reproduction where an egg develops into an organism without fertilization. While it does not involve the fusion of male gametes, it typically involves female gametes, so it does not completely fit the question.

- **d. Agamospermy**: Similar to apomyxis, agamospermy refers to the production of seeds without fertilization. However, it is often used interchangeably with apomyxis and might involve some gametic processes, making it less clear.

3. **Conclusion**: After analyzing all the options, the best answer is **b. Apomyxis**, as it clearly involves reproduction without the fusion of gametes.

### Final Answer:
**b. Apomyxis**

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