Question: Mollusks ( e . g . , clams, snails, slugs, cephalopods ) lack a true brain except for cephalopods ( squid , octopi ) .

Mollusks (e.g., clams, snails, slugs, cephalopods) lack a true brain except for cephalopods (squid, octopi). The octopus brain, although very brilliant, encircles the esophagus so that each bite of food must pass through the middle of its brain. Among other problems, this severely limits the size of food bites (big chunks of food will literally stretch the brain past functional limits). It is not unreasonable to intuitively assume that this is a maladaptive feature.
Under Occam's Razor, what you know about general biology, and what you learned in this class, you should not be at all surprised, after doing a bit of literature research, to find out (pick all sentences that would be relevant to this problem.): (select all that apply)
Group of answer choices
closely related mollusks have a network- or lattice-like arrangement of ganglia around the digestive track.
The brain becomes an additional tool to crush food.
Octopus evolution is apparently constrained by traits of ancestral mollusks.
This allows the octopus to determine if the food particle is too big to swallow.

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