In flowering plants, fertilization occurs when:
Answer
The pollen tube reaches the ovule
The correct answer is The pollen tube reaches the ovule — Thus, fertilization occurs when the pollen tube reaches the ovule.
Step-by-step solution
- Pollination brings pollen grains onto the stigma of a flower.
- Each pollen grain germinates and a pollen tube grows down the style.
- Fertilization is the fusion of male and female gametes, which happens only when the pollen tube reaches the ovule and releases sperm cells.
- Thus, fertilization occurs when the pollen tube reaches the ovule.
Common mistake: Choosing the production of pollen as the moment of fertilization.
Concept tested: Fertilization in angiosperms
Published · How this solution was prepared and checked
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