Why is the stigma sticky in a flower?

Just a question I had. If you want a specific flower, I was looking at a hibiscus flower. Thanks!


~Meg

Why is the stigma sticky in a flower?
the stigma is sticky in all flowers so that when insects brush past it, the pollen on their bodies sticks to it.





the pollen grain, once landed on the stigma, grows a pollen tube down towards the ovule (at the bottom of the stigma).





the male gamete (sex cell) moves down the pollen tube.





the pollen tube enters the ovule and the male and female gametes fuse - fertilisation.





once fertilisation has taken place, the ovule becomes a seed and the ovary (surrounding the ovule) becomes a fruit. the petals then die and drop off.





hope this helps x





p.s. thankyou for helping me with my biology studying!!
Reply:so pollen can adhere
Reply:If I remember my biology correctly, that stickiness is part of the flower's reproductive cycle. The flower produces the sticky substance and attaches pollen to it and then a bee comes along and lands on the flower. The pollen is then stuck to the bee's legs until it lands on another flower. And that way the flowers can cross pollinate. I love questions about sex, LOL!





Although, I was a 'D' student and I graduated from high school 26 years ago. So, I could have gotten one or two of the details mixed up a little bit.
Reply:stigma in a flower is sticky bcoz it has to recieve the pollen grains.these pollen grains when pollinated lie on the stigma and germinate to form the pollen tube
Reply:To catch and hold on to the airborne pollen.
Reply:i think it may be because of some sticky substance that the flower forms in order to attract the pollen grains which are needed for reproduction.