During pollination, after pollen lands on the stigma, what happens next?

During pollination, after pollen lands on the stigma, what happens next?

• A. Pollen grain germinates on the stigma
• B. Pollen tube grows to the ovule and fertilization occurs
• C. The ovary enlarges
• D. The seed forms

Answer: (B)

After pollen lands on the stigma, the pollen grain hydrates and germinates, producing a pollen tube that grows down through the style toward the ovule. The sperm travel inside this tube, and fertilization occurs when a sperm fuses with the egg in the ovule. This sequence—pollen tube reaching the ovule and fertilization—explains why that option is the best description of the next events after pollination. The ovary enlarges and seeds form later as the fruit develops.

After pollen lands on the stigma, the pollen grain hydrates and germinates, producing a pollen tube that grows down through the style toward the ovule. The sperm travel inside this tube, and fertilization occurs when a sperm fuses with the egg in the ovule. This sequence—pollen tube reaching the ovule and fertilization—explains why that option is the best description of the next events after pollination. The ovary enlarges and seeds form later as the fruit develops.