Lateral line
A)scales that resemble a tooth, having a broad base and a narrow pointed top
B)a flap covering the gills of a bony fish
C)a deep sea fish with a skeleton of cartilage
D)an organ for breathing underwater, consisting of membranes through which oxygen can pass
E)an organ along the side of a fish that can detect movement in the water
E) an organ along the side of a fish that can detect movement in the water.
Operculum
A)scales that resemble a tooth, having a broad base and a narrow pointed top
B)an organ along the side of a fish that can detect movement in the water
C)an organ for breathing underwater, consisting of membranes through which oxygen can pass
D)a deep sea fish with a skeleton of cartilage
E)a flap covering the gills of a bony fish
E) a flap covering the gills of a bony fish.
The correct answer is E) an organ along the side of a fish that can detect movement in the water.
To determine the correct answer, you can rely on your knowledge of fish anatomy. The lateral line is a sensory system found in fish and some other aquatic animals, such as amphibians. It is responsible for sensing vibrations and movement in the water.
One way to remember this is by breaking down the term "lateral line." "Lateral" refers to the side of the fish's body, and "line" suggests a linear structure. The lateral line is a line of sensory pores that runs along the side of the fish's body, parallel to its length.
By process of elimination:
- Option A) Scales resembling a tooth with a broad base and narrow pointed top do not describe the lateral line.
- Option B) A flap covering the gills of a bony fish refers to the operculum, not the lateral line.
- Option C) A deep-sea fish with a cartilage skeleton describes a cartilaginous fish like a shark, but it does not pertain to the lateral line.
- Option D) An organ for breathing underwater with membranes for oxygen exchange describes gills, but not the lateral line.
Therefore, the correct answer is E) an organ along the side of a fish that can detect movement in the water.