|Flowers are the sex organs of plants.|
|Mushrooms are the sexual structures of fungi|
|3-spine stickleback--Gasterosteus aculeatus|
When you start to look into it, you begin to realize that reproductive strategies and mating behaviors are extremely diverse within and across taxa. I'm sure everyone has heard gruesome tales of the sex lives of some spiders, and many other insects, where after mating the female ingests the male getting extra nutrients to ensure the success of their off-spring.
But, who knew that the Indonesian Octopus, Abdopus aculeatus had such an entertaining and dramatic sex life? Read all about it here: http://evolution.berkeley.edu/evolibrary/news/080501_octopusmating. What is up with the deep sea angler fish? Watch this short video from Animal Planet I found on YouTube about angler fish mating customs for insight into that bizarre strategy. And how is it that we are just now learning about the twisted, quite literally, reproductive strategies of ducks?
For more information on the evolution of sex and the diversity of reproductive strategies amongst plants and animals, I recommend reading the review Evolution and Sexuality: Bilogy and Behavior, by Gregory G. Dimijian, MD. available on the NCBI Database: