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Seventeen thousand (17,000) is the number of lenses that a butterfly has. The lepidopterans in question rely upon compound eyes for vision. Each eye uses 17,000 ommatidia, or light receptors each of which has a cone and cornea that together work as a lens.
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∙ 7y ago
Wiki User
∙ 16y agoDragonflies have as many as 30000 lenses in each eye
Wiki User
∙ 14y agoThey have two main eyes, but each of these eyes are made up of approximately 20,000 to 25,000 tinier eyes, allowing them to zero in on the flying insects that are their daily meals.
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∙ 7y ago201 eiwiwi
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Why do dragonflies have so many lences?
Dragonfly has many lenses in it's eye. Probably nature thought that many lenses are required to see many objects. So it is probably natures experiment in evolution of eye. You have single lens in each eye of more evolved animals.
How many dragonflies are the US?
they are 5,500 dragonflies across the world
How many legs do dragonflies have?
Like all insects, dragonflies have six legs, arranged in three pairs.
How many syllables does the word dragonflies have?
Sound it out: dra-gon-flies From this, we can deduce that dragonflies has three (3) syllables.
When there are many dragonflies flying in one spot what does that mean?
It means that there is some sort of gathering of insects that the dragonflies are eating
How many babies does dragonflies have?
Dragonflies lay hundreds of eggs at one time. However, many do not survive as they are eaten by other insects and some birds.
Do dragonflies eat other dragonflies?
yes
What preys upon dragonflies?
Dragonflies have too many predators to list. They're eaten by birds, bats, frogs, fish, large spiders, wasps and other dragonflies, to name a few.
Are there any superstitions surrounding dragonflies?
There are many superstitions regarding dragonflies in folk culture. Many people believe that the presence of a dragonfly means good luck.
How many spieces of dagonflies?
There are hundreds of species of Dragonflies
How many bugs do dragonflies consume in a day?
3000
Why are there so many dragonflies in the fall?
During the fall, all generations have emerged and thats why you see more of them. At the end of the fall, the dragonflies will die.
