Which process is essential for fertilization in flowering plants?

Which process is essential for fertilization in flowering plants?

• A. Pollination
• B. Pollenogenesis
• C. Germination
• D. Fertilization without pollen transfer

Answer: (A)

Pollination is the step that makes fertilization possible in flowering plants. It moves pollen from the male anthers to the female stigma, placing the pollen right where fertilization can begin. Once on a compatible stigma, the pollen grain can germinate and grow a pollen tube down the style toward the ovule, delivering sperm to achieve fertilization. Without this transfer of pollen, the male and female gametes never meet, so fertilization cannot occur. The other terms describe different stages or concepts: pollenogenesis is the formation of pollen, germination is when a pollen grain starts growing after landing on a stigma, and fertilization without pollen transfer would skip the necessary pollen delivery step.