Why do spider orchid flowers look like spiders ?

Answer 1

They look like spiders for the same reason you look like a human and a dog looks like a dog. It's all determined by the DNA of the organism. Spider orchid's DNA makes the flower look like it does. It just happens to resemble a spider, which by the way, looks like a spider because of its DNA.

Answer 2

They look like orchids. Because they resembled spiders, that was the name given to them by English speaking people. The real name is some triple barrelled Latin concoction that I have no idea how to pronounce and is usually loaded up with abbreviations which makes the pronunciation even harder. If you really want to know it, ask a florist.