A nerve net is the type of nervous system that would be found in which of the following organisms?
A. jellyfish
B. cockroach
C. fiddler crab
D. earthworm
E. frog
A. jellyfish
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To be certain the botulinum toxin is inactivated, the source must be heated for at least 2 minutes at 100 °C
Indicate whether the statement is true or false.
Utilizing pigments for camouflage is common in ____ fishes
a. benthic b. tuna c. pelagic d. reef e. angler
Mitochondria have their own DNA, which encodes some of the proteins that function within the mitochondria. Explain why the inheritance of mitochondrial DNA is described as "maternal inheritance."
What will be an ideal response?
In the ant, Messor pergandei, new nests are founded by multiple queens. What is the mechanism causing an increase in the death rates of queens?
a. A group of sibling workers takes over and kills the queens that are not their mother. b. Individual queens benefit from cooperation and will not fight until the workers' eclosion. c. Fights between queens increase when the colony shifts from within to between group selection. d. With an increase in the age of the colony, the deaths of queens accumulate.