Parthenogenesis is defined as the development of organism directly from

Options

A. Egg without fertilization
B. Synergids without fertilization
C. Fruits without fertilization
D. Fruit without pollination

Answer

**Step-by-Step Solution:**

1. **Understanding Parthenogenesis**: Parthenogenesis is a form of asexual reproduction where an organism develops from an unfertilized egg. This means that the egg can develop into a new individual without the need for fertilization by sperm.

2. **Mechanism of Parthenogenesis**: In parthenogenesis, the mature egg undergoes mitotic division. Unlike sexual reproduction, where meiosis occurs to produce haploid gametes, parthenogenesis does not involve meiosis. Instead, the egg directly develops into an embryo.

3. **Examples of Parthenogenesis**: This process is observed in various organisms, including some plants and certain animal species. For instance, in flowering plants, the cells of the genitophyte can undergo parthenogenesis.

4. **Conclusion**: Therefore, parthenogenesis is defined as the development of an organism directly from an egg without fertilization.

**Final Answer**: Parthenogenesis is defined as the development of an organism directly from an egg without fertilization.

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