Embryo formation directly from an unfertilized ovum is recognized as___________________?
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Answer: B. Parthenogenesis
Explanation
Parthenogenesis describes the biological developmental process where an embryo forms from an unfertilized ovum. The egg cell develops directly into a viable plant embryo without fusion with a male gamete. Botanists classify this phenomenon as a form of apomixis producing genetically identical offspring. An unfertilized ovum normally degenerates unless specialized reproductive mechanisms intervene. Parthenogenesis allows certain plant species to bypass sexual fertilization during seed production. Offspring produced via this method typically share the exact maternal genotype.
Plant breeders study parthenogenesis to fix hybrid vigor permanently in self-propagating crop lines. Understanding apomictic reproduction helps researchers develop true-breeding hybrid seed technologies. Agricultural innovations based on parthenogenesis could revolutionize commercial seed production economics. Apogamy involves embryo development from synergids or antipodal cells rather than the egg cell. Apospory refers to the development of gametophytes from somatic cells of the ovule. Autogamy simply means self-pollination and fertilization, which contradicts unfertilized ovum development.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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