Which of the following statements about common features of chordates is true?
a) The dorsal hollow nerve cord is part of the chordate central nervous system.
b) In vertebrate fishes, the pharyngeal slits become the gills.
c) Humans are not chordates because humans do not have a tail.
d) Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.
Ans: a) The dorsal hollow nerve cord is part of the chordate central nervous system.
You might also like to view...
Which of the following statements is false?
a. About 300 species of turtles currently exist. b. Turtles do not have teeth. c. Turtle shells are enlarged in marine forms. d. Turtles must return to land to lay eggs. e. Most sea turtle species are highly endangered
In a simple experiment involving only predator and prey with no refuge,
A) prey will always survive. B) predators will typically drive their prey to extinction. C) both populations will oscillate. D) prey populations will oscillate.
If you observe a cell that contains organelles, then that cell is most likely a(n) prokaryote
__________________ Indicate whether the statement is true or false.
The atria of the heart
A. are separated from each other by the interventricular septum. B. function primarily as reservoirs for blood collection. C. function primarily as the pumps of the heart. D. receive blood from the aorta and pulmonary trunk. E. have all of these characteristics