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Arthropod Quiz (OQ)

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Yoda
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Arthropod Quiz (OQ)

Unread post by Yoda » Thu Sep 11, 2014 8:48 am

Ok, I will have a go.

What organisms have been taken into space, exposed to the vacuum of space, and survived?

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Re: Arthropod Quiz (OQ)

Unread post by Philip1 » Thu Sep 11, 2014 10:06 am

Bacteria?
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Re: Arthropod Quiz (OQ)

Unread post by Yoda » Thu Sep 11, 2014 1:00 pm

Philip1 wrote:Bacteria?


Phillip,
This experiment could well have been done on bacteria.

But the creature I am thinking of is an arthropod.

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Re: Arthropod Quiz (OQ)

Unread post by Philip1 » Thu Sep 11, 2014 2:32 pm

Water bears, also known as tardigrades?
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Re: Arthropod Quiz (OQ)

Unread post by Phokojwe » Fri Sep 12, 2014 11:47 am

Ditto Philip1
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Re: Arthropod Quiz (OQ)

Unread post by Yoda » Fri Sep 12, 2014 5:08 pm

Phillip, Phokojwe,

You are both correct. :thumbs_up:

Tardigades are extremophiles - organisms capable of living in challenging environmental conditions

tardigrades are the first known animal to survive in space. On September 2007, dehydrated tardigrades were taken into low Earth orbit on the FOTON-M3 mission carrying the BIOPAN astrobiology payload. For 10 days, groups of tardigrades were exposed to the hard vacuum of outer space, or vacuum and solar UV radiation. After being rehydrated back on Earth, over 68% of the subjects protected from high-energy UV radiation revived within 30 minutes following rehydration, but subsequent mortality was high; many of these produced viable embryos.

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Re: Arthropod Quiz (OQ)

Unread post by Philip1 » Wed Sep 17, 2014 10:15 am

Nobody?
I'll give it a go....How do Arthropods grow?
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Re: Arthropod Quiz (OQ)

Unread post by JeanniR » Wed Sep 17, 2014 10:25 am

They shed their exoskeliton in order to grow. Also to grow larger they eat a lot of proteins :tongue:
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Re: Arthropod Quiz (OQ)

Unread post by Phokojwe » Wed Sep 17, 2014 12:21 pm

Ditto JeanniR
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Re: Arthropod Quiz (OQ)

Unread post by Philip1 » Wed Sep 17, 2014 2:40 pm

JeanniR and Phokojwe. :thumbs_up:

"All arthropods grow by molting; they shed their exoskeletons, expand their bodies by absorping water, and then secrete a new, larger exoskeleton into which they grow".
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Re: Arthropod Quiz (OQ)

Unread post by Phokojwe » Wed Oct 01, 2014 5:19 pm

Arthropods are divided into four groups. Can you name them and give an example from each group?
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Re: Arthropod Quiz (OQ)

Unread post by MATTHYS » Wed Oct 01, 2014 5:31 pm

I think I know one of the groups, Phokojwe.
Crustaceans - example, lobsters ?
aquila non capit muscas

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Re: Arthropod Quiz (OQ)

Unread post by Philip1 » Wed Oct 01, 2014 6:40 pm

:hmz: Insects… are a class of invertebrates within the arthropod phylum that have a chitinous exoskeleton, a three-part body, three pairs of jointed legs, compound eyes and one pair of antennae.

Myriapods… have a long segmented body and many walking limbs, includes the centipedes and millipedes.

Arachnids…are characterized by hard exoskeletons, usually having two body sections (Opiliones are the exception), eight legs, seven segments to a leg, fang-like pincers (chelicerae) and simple eyes. Common examples of arachnids include spiders, scorpions, ticks, and mites.

Crustaceans…is the name of any of various predominantly aquatic arthropods of the class Crustacea, including lobsters, crabs, shrimps, and barnacles. They have a segmented body, formed of a head, a thorax and an abdomen called pleon. A chitinous exoskeleton, and paired jointed limbs.
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Re: Arthropod Quiz (OQ)

Unread post by JeanniR » Thu Oct 02, 2014 8:31 am

The groups are Chelicerata, Crustacea, Uniramia, and Trilobita. :hmz:

Chelicerates - horseshoe crabs, sea spiders, and the arachnids. Also includes more common ones are ticks, spiders and scorpions.

Crustaceans - Lobsters and crabs (all primarily found in water).

Uniramia - insects, centipedes and millipedes.

Trilobites - Kainops invius and Paradoxides sp.

Something interesting about the Trilobites:

We know the fascinating trilobites only by their abundant fossils. They appear to have evolved in the early Cambrian period, some 545 million years ago. During their heyday, trilobites dominated the world's oceans. Some were as long as 18 inches (45 centimeters) and may have weighed 10 pounds (4.5 kilograms). Their bodies were divided into three side-to-side lobes as well as a head, a thorax, and a tail region (pygidium). They swam and crawled with an abundance of jointed appendages. Although successful for many centuries, the trilobites had entirely vanished by the Jurassic period, some 250 million years ago. Their extinction remains one of the great mysteries of paleontology.
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Re: Arthropod Quiz (OQ)

Unread post by Phokojwe » Fri Oct 03, 2014 10:53 am

Matthys 1/4 :thumbs_up:
Philip1 3/4 :thumbs_up:
JeanniR 4/4 :thumbs_up: :clap: :clap:

Philip, Insects, Millipedes and Centipedes all form part of the Subphylum Uniramia

Uniramia is the largest subphylum within the arthropods. It includes the centipedes, the millipedes, and the insects, as well as a few smaller related groups. The name Uniramia comes from the unbranched appendages that characterize members of the group. Species generally have two or three tagmata. There are one pair of antennae and two pairs of maxillae. Respiration occurs via tracheae. Uniramians generally have separate sexes. - See more at: http://www.encyclopedia.com/topic/Arthr ... 9c82T.dpuf
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