Year 9 - Science
Pollination and fertilisation
Reproduction in plants
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores plant reproduction, including flower structure, pollination, fertilisation, seed formation, and dispersal mechanisms. It highlights the role of insect pollination in food security. Focus is on planning and conducting enquiries, and ensuring reliable observations.
Lesson Summary
You will learn to describe the processes of pollination and fertilisation in flowering plants.
Key Notes
- Pollination is the transfer of pollen from the male anther to the female stigma.
- There are two types of pollination; self-pollination and cross-pollination. The latter increases variation in a species.
- Pollen grains can be transferred by the wind, water or by insects.
- Fertilisation is the fusion of the nuclei from the male and the female gametes.
- A zygote grows into an embryo and then a new plant.
Vocabulary To Learn
- pollination: Pollination is the process of transferring pollen from an anther to a stigma of a flower.
- ovary: The ovary is a female organ of the flower where ovules produce ova.
- style: The style holds the stigma and connects it to the ovary.
- stamen: The stamen is the male part of the flower, made up of an anther held up by a filament.
- fertilisation: The fusion of a male gamete (from pollen) and a female gamete (an ovum) is called fertilisation.
Common Mistakes To Avoid
- Pollen are seeds, or that seeds are not made by sexual reproduction.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Pollination is the transfer of pollen from the male anther to the female stigma. There are two types of pollination; self-pollination and cross-pollination. The latter increases variation in a species.
2. Define this scientific word and use it in context. 'pollination'
Pollination is the process of transferring pollen from an anther to a stigma of a flower. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pollen are seeds, or that seeds are not made by sexual reproduction. Correction: Clearly show the difference between pollen as a gamete and the seeds as the offspring that grows into a new plant.
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