What it does
A flower is a plant’s reproductive organ. This page shows one drawn flower in layers, from the outside in: sepals, petals, stamens (the male part) and the carpel (the female part). Tap the picture to peel one layer at a time and see what is left in the middle.
Each part has a label and a one-line job in the list below. The picture is a simplified model for learning, not any real species. To see what happens after the pollen lands, try double fertilisation stepper, and for how cells multiply to build the flower, see cell division.
How to use it
- Look at the whole flower and read the labels.
- Tap the picture, or press the peel button, to remove sepals, then petals, then stamens.
- Press Move pollen to stigma to see pollination.
- Press Start again to rebuild the flower, then answer the quiz.
What each part does
- Sepal: protects the bud before it opens.
- Petal: bright colour to attract insects and birds.
- Filament and anther: together the stamen; the anther makes pollen.
- Stigma, style, ovary: together the carpel; the stigma is sticky and catches pollen, the style is the tube, and the ovary holds the ovules.
- Ovule: holds the egg cell and becomes the seed; the ovary becomes the fruit.
Worked example
Peel three times. The sepals, petals and stamens are gone and only the carpel remains: a stigma on top, a style below it and an ovary at the base with ovules inside. If you pressed Move pollen first, the grains stay on the stigma, which is pollination.
FAQs
What is pollination? The movement of pollen from an anther to a stigma, by wind, insects, birds or water.
Is pollination the same as fertilisation? No. Fertilisation happens later, when a male cell from the pollen joins an egg in an ovule.
Do all flowers have all four layers? No. Many flowers lack sepals or petals, or have only stamens or only a carpel.
Where the numbers come from
- The parts of a flower (sepal, petal, stamen with filament and anther, carpel with stigma, style and ovary, ovule) and pollination are standard school biology. The flower is a simple drawing, not a real species. Drawings are fibub's own.
- Nothing you do on this page is stored or sent anywhere.
Standard scientific values, such as constants, atomic weights and melting points, are facts found in every textbook; we name where ours were checked. If you are an author or publisher and want a value, a credit or a table changed or removed, tell us and we will act quickly.
Last updated 2026-11-10.