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Organisms

Postby larock01 » Sat Apr 15, 2006 9:30 pm

A biologist isolates an organism from a pond and describes it in his lab notebook as having both a larval and an adult stage, air-breathing lungs, the digestive system of a carnivore, eggs that lack shells, and camouflage epidermis that secretes toxins, and as exhibiting external fertilization. What is the organism being described?

I am hesitating on the following:
- A snake
- A frog
- A freshwater clam
- A salamander
- A lungfish

Thanks in advance for your much needed help!
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Postby February Beetle » Sat Apr 15, 2006 10:29 pm

A snake doesn't have a larva and adult stage.
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Postby larock01 » Sat Apr 15, 2006 11:17 pm

im thinking lungfish or salamander? However, I am not sure.
Can someone help?
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Postby alextemplet » Sun Apr 16, 2006 12:29 am

My guess, for what it's worth, is frog.
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Postby larock01 » Sun Apr 16, 2006 12:51 am

Can anyone else maybe confirm that?
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Postby kiekyon » Sun Apr 16, 2006 1:30 pm

yeah, a frog.
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Postby Linn » Sun Apr 16, 2006 3:25 pm

What is a ......

Clam :idea:
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Postby larock01 » Sun Apr 16, 2006 4:49 pm

Here is what clam is:

http://en.wikipedia.org/wiki/Clam
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Postby Linn » Sun Apr 16, 2006 5:11 pm

A snake ...No
- A frog ....No
- A freshwater clam ...YES!
- A salamander...No
- A lungfish >>>No

The larva stage of clam :idea:
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Postby Linn » Sun Apr 16, 2006 5:16 pm

1.deduction by elimination.
2. research key word: clam larva stage
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Postby Beetle » Mon Apr 17, 2006 10:28 am

How can it be clam when it has air-breathing lungs?! It is frog or/and salamandra. There are no difference between them in these shown characteristics except maybe for camouflaged skin which is more common in frogs although some salamanders can have it too (although thay usualy have aposematic colored skin). So I say it is most definatly FROG!
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Postby kabuto » Mon Apr 17, 2006 12:31 pm

sounds like a rog for me, ok not all frogs but i definitey have heard of frogs that produce very powerful toxin
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