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It's a surface area to volume consideration: oxygen is taken in through the spiracles, and diffuses through the hemolymph. If an insect were very big, a different type of oxygen-exchange system (lungs or gills) would be required.
Also, in order for an insect to be big, it would need a very sturdy exoskeleton which would be too heavy for quick movement, and it would not be able to molt easily.
In ancient times dragonflies were up to a 70cm/30in wingspan and early scorpions up to 2 meters/6.5 ft.
What else can I help you with?
What are bees spiracles?
the tiny holes on the bees abdomen for respiration
Do bees have skin, and if so, how does it differ from the skin of other animals?
Bees do have skin, but it is different from the skin of other animals. Bee skin is covered in a layer of tiny hairs that help them collect pollen and protect them from the environment. This hair-like covering is called setae and is unique to insects like bees.
Does carpenter bees and blackjack bees look alike?
Yes. They look alike but aren’t the exact same. If you look, there are tiny details that are different that your miss.
Do queen bees have pincers?
No, queen bees do not have pincers. Queen bees have mandibles that are used for tasks such as feeding, grooming, and manipulating eggs, but they do not have pincers like some other insects such as beetles or scorpions.
Are there bees in the Australian Outback?
Yes, there are most definitely bees in the Australian outback. Australia has a range of bees, from the tiny Quasihesma bees of Cape York to the Dawson's Burrowing Bee, a very large species found in the dry arid outback of Western Australia.
Why do girls find tiny bees and spiders scary?
It's not the size of the animal. It's the pain of the sting.
Why are honey bees not fuzzy?
Honey bees have tiny branched hairs that make them appear fuzzy, but they are not as prominent as in some other bees. The hairs on honey bees help with collecting pollen and regulating body temperature, but they are not as thick or dense as in other bee species.
How many toes do bees have?
bees have no toes, so 0
Do bees sting rabbits?
Bees will sting any thing so yes.
How are bees viewed as a barometer in the environment?
this makes the recent state of bees even more alarming .If bees are in trouble so are we
Can bees breathe carbon monoxide?
No, bees cannot breathe carbon monoxide. Like most insects, bees do not have lungs to breathe air like humans; instead, they have a series of tiny tubes called tracheae that deliver oxygen directly to their cells. Carbon monoxide can be toxic to bees and interfere with their respiratory system.
How do bees fly with their little wings?
it is hard wired in to their brains, they need not learn how to do it. Same way you never learned to breath, you just do it.
