How are Tardigrades and Onychophorans phylogenetically related to arthropods?
tardigrades are sister taxa to arthropods and onychophorans are a sister monophyletic group
How is cryptobyosis adaptive for tardigrades?
protection against decication when enviornment dries (water films).
they become dormant untill put in water again
Contrast basic and applied research using a horseshoe crab example.
In the Limulus amebocyte lysate assay blue blood was extracted form horse shoe crabs and then tested and determined that in the presence of endotoxins from gram-negative bacteria the blood becomes gel-like
Briefly describe the body form, habitat and feeding ecology of the following arachnids:1. spiders 2.Scorpions 3. harvestman 4. ticks and mites