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It's the first time I use this website and I really need help because I'm totally stuck

Now I'm in school, but I'm trying to prepare for the Olympics During the preparation, I found the issue on the anatomy of the animals, but it's something new for me - I can't even determine what it is!

enter image description here

What kind of animal is it? Could you determine some, the most vital and major of highlighted points? If you can help me to determine the kind of it, i will be able to use more specific books to find out.

I will be very grateful for any help!

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  • $\begingroup$ Click on edit and insert in your edit all the terms for the numbers. $\endgroup$ – SANBI samples Nov 13 '15 at 20:10
  • $\begingroup$ @SANBIsamples - that's part of the question, it's homework $\endgroup$ – AliceD Nov 13 '15 at 20:37
  • $\begingroup$ okay @AliceD what's unhappy with homework? $\endgroup$ – SANBI samples Nov 13 '15 at 21:27
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    $\begingroup$ @SANBIsamples, there's nothing that's unhappy, but by the looks of it you asked for clarification, but OP asks to have the numbers explained. In other words, you re-asked the question. $\endgroup$ – AliceD Nov 13 '15 at 22:28
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    $\begingroup$ Assuming you mean the Biology Olympiad, I would hazard a guess that this is a deshelled snail, judging from the visible helix in the middle and right images. $\endgroup$ – March Ho Nov 14 '15 at 14:30
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The animal is very suggestive for Dog whelk-like mollusc removed from its shell.

I try to mark the organs, do not rely on these marks as an absolut.

  1. Testis

  2. Renal vein

  3. Gill

  4. Mantle

  5. Prostate

  6. Osphradium

10 and others - digestive and reproductive systems, cannot mark precisely.

  1. Digestive gland

source for comparing etc

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