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Insect Quiz (RV)

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Phokojwe
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Re: Insect Quiz (RV)

Unread postby Phokojwe » Tue Oct 01, 2013 11:34 am

Insects don't have lungs..so how do they breathe?
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Re: Insect Quiz (RV)

Unread postby onewithnature » Wed Oct 02, 2013 1:51 am

Nice Q, Phokojwe. :thumbs_up:

Although technically breathing isn't the correct word to use - insects don't have lungs, nor do they transport oxygen through their circulatory systems - they do perform an oxygen-carbon dioxide exchange mechanism via tubes and spiracles. Spiracles are breathing holes located along the sides of the bodies of insects, which are connected to trachea (air tubes). The insect can open or close the spiracles by contracting muscles along its side, which in turn allows the simple two-way diffusion of air, and thereby oxygen and carbon dioxide through the insect's cells. Because the insect cannot control the rate of diffusion of gases using this method, this proves to be the prime factor that limits its size.
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Re: Insect Quiz (RV)

Unread postby Philip1 » Wed Oct 23, 2013 8:57 am

Well explained OWN. :thumbs_up:
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Extinction is forever and survival is up to---every last one of us!

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Phokojwe
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Re: Insect Quiz (RV)

Unread postby Phokojwe » Wed Oct 23, 2013 1:04 pm

Apologies, I seemed to have overlooked this quiz :redface:

You are correct onewithnature :thumbs_up:
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Re: Insect Quiz (RV)

Unread postby Philip1 » Tue Oct 29, 2013 8:36 am

:hmz: OWN...away?
"Lose yourself in Nature and find Peace!" (Ralph Waldo Emerson)
UNITE AGAINST POACHING...What we protect,
do not let poachers take it away!

Extinction is forever and survival is up to---every last one of us!

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Re: Insect Quiz (RV)

Unread postby Heksie » Tue Oct 29, 2013 9:36 am

Give own a few seconds :tongue:
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Re: Insect Quiz (RV)

Unread postby onewithnature » Wed Oct 30, 2013 12:27 am

Firsts are better ... :whistle: :lol:
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Re: Insect Quiz (RV)

Unread postby onewithnature » Wed Oct 30, 2013 1:10 am

Almost all animals cease to move when their heads are severed from their bodies. However, some insects, like ants, can still sting and run around after their heads are removed. How is this possible?
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Re: Insect Quiz (RV)

Unread postby Heksie » Wed Oct 30, 2013 4:49 am

Because their nerves kept on working? Maybe their sensors aren't located in their head/brain like ours?
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Re: Insect Quiz (RV)

Unread postby Philip1 » Wed Oct 30, 2013 8:20 am

"After you cut a insects head off, very often their necks would seal off just by clotting. They do not have blood pressure the way people do. There's no uncontrolled bleeding. Insects have clumps of ganglia—nerve tissue agglomerations—distributed within each body segment capable of performing the basic nervous functions responsible for reflexes. So without the brain, the body can still function in terms of very simple reactions. They could stand, react to touch and move."
"Lose yourself in Nature and find Peace!" (Ralph Waldo Emerson)
UNITE AGAINST POACHING...What we protect,
do not let poachers take it away!

Extinction is forever and survival is up to---every last one of us!

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Phokojwe
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Re: Insect Quiz (RV)

Unread postby Phokojwe » Wed Oct 30, 2013 12:46 pm

Philip :thumbs_up:

In addition, insects breathe through spiracles located along the sides of their bodies and the brains do not control this breathing and blood does not carry oxygen throughout the body. Rather, the spiracles pipe air directly to tissues through a set of tubes called tracheae. :hmz:
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onewithnature
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Re: Insect Quiz (RV)

Unread postby onewithnature » Thu Oct 31, 2013 1:31 am

Heksie, yes, that is true, but I wanted to know why it is so.
Phokojwe, thanks for the extra info.
Philip, spot on. :clap: It is the "extra brains" contained in nerve bundles known as ganglia that can allow the insect to continue functioning without its main head-based brain; albeit for a limited time period.

Over to you, Philip ... :thumbs_up:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

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Philip1
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Re: Insect Quiz (RV)

Unread postby Philip1 » Thu Oct 31, 2013 8:20 am

:) What are the stages of a butterfly's lifecycle? :whistle: Easy hey. :)
"Lose yourself in Nature and find Peace!" (Ralph Waldo Emerson)
UNITE AGAINST POACHING...What we protect,
do not let poachers take it away!

Extinction is forever and survival is up to---every last one of us!

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Heksie
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Re: Insect Quiz (RV)

Unread postby Heksie » Thu Oct 31, 2013 11:03 am

Egg...worm...pappilae(I think it is the right word)...butterfly :tongue:
2015
10 July Letaba
11 July Satara
12-14 July Lower Sabie
15-18 July Tsendze

24-27 September Lower Sabie

11-20 Dec Satara
14 Dec Sable Hide
21-27 Dec Lower Sabie
28-31 Dec Satara
1 Jan Croc Bridge
2-4 Jan Satara
5-8 Jan Lower Sabie

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Phokojwe
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Re: Insect Quiz (RV)

Unread postby Phokojwe » Thu Oct 31, 2013 1:03 pm

Heksie :thumbs_up:

Egg -> Caterpillar -> Chrysalis (Pupa) -> Butterfly
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