Dissection of Hibiscus Flower
Flowers aren’t just beautiful, they’re actually complex reproductive systems! You can dissect a hibiscus flower to get an inside look and some hands-on experience. You’ll get to see how the flower uses both a male and female reproductive system to create its own ovules and fertilize itself. This allows the flower to reproduce on its own. Just remove the petals and anthers, slice the anthers and stigma with a scalpel, and peel the ovary with your fingers to dissect your own flower!
Remove the flower from the plant.
You can use scissors or your hands. Leave at least a little bit of the stem. You don’t want to accidentally cut off an important part of the flower base, like the ovary.
Remove the sepals and petals from the flower.
Sepals are the small, green leaf-like structures in between the petals and the stem. Use your hands to pull each one down towards the stem.
- Be careful and go slowly so you don’t remove another part of the flower by accident.
- Pull off the sepals before the petals.
- The sepals protect the bud of the flower as it develops, especially from cold or injury.
Remove the anthers and their stems.
Anthers create pollen inside the stamen of the flower. The anthers are the yellow, furry looking tips. Each one is attached to a thin stem. Either pull them off with your hands or slice them off with a scalpel. If you use your hands, be sure not to pull too hard, or you can rip off too much of the flower.
Slice the stamens and anther in half with a scalpel.
The stamen is where the pollen is produced. Be very gentle because the anther is very small and fragile. Inside, you’ll find pollen and pollen grains.
The pollen is what fertilizes the flower’s ovules, which allows it to reproduce. Wind blows the pollen from a flower that’s producing it to another flower, where it catches on the stigma and germinates. Next, it grows a pollen tube to reach the egg.
Slice the stigma down the middle with a scalpel.
The stigma is part of the pistil, and it’s where the pollen germinates so that it can fertilize the ovules. Start at the tip of the stigma and move down through the end of the stem.
- Try to slice as straight as possible.
- Don’t slice all the way through! Gently push down the scalpel as you slice to only cut through half of the layers.
Expose the ovary with your fingernails.
The ovaries are inside the pistil. You can expose them by peeling off the style of the flower from around the ovary. You should be left with a small, white, cone-shaped piece. This is where the ovules are produced.
Slice the ovary open with the scalpel
Inside you’ll find tiny ovules with an embryo sack and sometimes seeds. If you’d like, you can scrape them out carefully with the scalpel.
The ovules are basically the “egg” of the flower. When the ovules are fertilized by pollen, they grow a plant embryo, which is contained in a seed until germination.
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