Of course - that's why so many plants have evolved brightly colored flowers! These attract the bees and other pollinating animals.
bees
red
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Bees can see higher frequencies of electromagnetic waves than humans can. Bees see flowers in different colors then we do. Bees see color about triple the speed as humans do.
Very dark red
Yes they do see in ultraviolet color. I just saw it for the question "How do Honeybees see?" answer.:)
Yes, bees can see color, but their color vision differs from that of humans. They are particularly sensitive to ultraviolet light, which allows them to see patterns on flowers that are invisible to us. Bees can perceive colors in the blue and green spectrum, but they cannot see red. This unique vision helps them identify and locate flowers more effectively for foraging.
Butterflies, Honey bees, Birds, and Jumping Spiders. See link for source.
the colour of bees blood is pale amber.
Nobody knows why bees are the color they are, it's just the way it is. But good question, though!
Bees have the ability to distinguish colors, they have a trichromatic color vision, so bees can see the three primary colours of UV, blue and green (they can't see red though) in the way that humans detect red, blue and green. When bees go off to collect nectar, they are attracted to colours of flowers which act as signals for them about the type of flower colours that provide more or less nectar. They will favour certain colours over others, this means that if they have found yellow flowers to provide more nectar they're more likely to visit yellow flowers. There have been many experiements carried out that prove that bees can see colour and many have trained bees successfully to favour certain colour over others. you should read about the work carried out by Von Frisch early 20th century which prove this, and many that followed after that.
the colour of bees blood is pale amber.