What it does
A flower is the part of a plant that makes seeds. This page shows a flower cut down the middle so you can see every part, from the outside in:
- sepals (green, protect the bud) and petals (attract insects);
- stamens, the male parts: an anther that makes pollen on a filament;
- the pistil (carpel), the female part: a sticky stigma, the style, and the ovary holding ovules.
In Parts, tap anything to see its name and job, or press Find a part and the page asks you to tap one.
In Pollination to seed, slide or play through the story: pollen reaches the stigma (carried by a bee from another flower, or falling from the same flower), a pollen tube grows down the style, a male gamete fuses with the egg in an ovule, and then the ovule becomes a seed while the ovary swells into a fruit. At Class 12 level the page zooms into the ovule’s embryo sac and shows double fertilisation: one male gamete + egg makes the zygote (2n), the other + two polar nuclei makes the endosperm nucleus (3n).
It follows the Class 9 science chapter Reproduction: How Life Continues, the Class 10 chapter on how organisms reproduce, and the Class 12 chapter Sexual Reproduction in Flowering Plants. Reproduction from one parent is in asexual reproduction explorer, and what happens to the genes in the seeds is in mendel's pea garden.
How to use it
- Parts: tap a part, or press Find a part and tap the one named. The table lists every part.
- Pollination to seed: choose cross- or self-pollination, then move Stage or press Play.
- Switch the level to Class 12 for the embryo sac.
A worked example
Press Find a part; suppose it asks for the style. Tap the thin tube between the stigma and the ovary. Now switch to Pollination to seed, choose Cross-pollination and play: the bee brings pollen to the stigma; at about a quarter of the way the tube starts down the style; just past halfway the top ovule turns green (fertilised); at the end the petals fade, the ovary is bigger (fruit) and the ovules are seeds.
Tips
- “Pistil” and “carpel” are used for the female part; a flower can have one or several carpels.
- Pollination (pollen to stigma) comes before fertilisation (gametes fuse).
- Wind-pollinated flowers are often small and dull, with lots of light pollen.
FAQ
Is every flower like this? No. Many flowers have only male or only female parts, and the numbers of parts vary. This is a typical flower with both.
Is this the NCERT book? No. It covers the same topics with fibub’s own drawing. fibub is not part of NCERT.
Where the numbers come from
- Flower structure, pollination, fertilisation and the Polygonum-type embryo sac (7 cells, 8 nuclei) are standard school and Class 12 biology. The drawing and all text are fibub's own; a teaching model, not to scale.
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 2026-11-09.