Question

select all that apply
select all of the following that are true about fish.
most abundant of vertebrates
all have bony skeletons
some graze on algae
can be autotrophic
have a cranium but lack jaws
important source of food for humans
some prey on other fish

Explanation:

• Fish are the most abundant vertebrates.
• Some fish graze on algae.
• Fish are an important food source for humans.
• Some fish prey on other fish.
• Not all fish have bony skeletons (e.g., sharks have cartilaginous skeletons).
• Fish are heterotrophic (they cannot produce their own food like autotrophs).
• Most fish have jaws (only some primitive fish like lampreys lack jaws but they are not the general case for fish).

Answer:

most abundant of vertebrates, some graze on algae, important source of food for humans, some prey on other fish