Multiple Choice
The ancestral deuterostome possessed external gills, similar to pharyngeal slits seen in extant deuterostomes.Many adult chordates, such as tunicates (sea squirts) do not possess pharyngeal slits.Why would tunicates (sea squirts) be considered similar to the ancestor of all chordates?
A) The body plan of adult tunicates parallels that of chordates.
B) Tunicate larvae possess the synapomorphies of adult chordates.
C) Tunicates have a lophophore-style mouth.
D) Tunicate larvae are primitive in all of their features.
E) Tunicate adults are very similar to the ancestors of cephalochordates and vertebrates.
Correct Answer:
Verified
Correct Answer:
Verified
Q218: Mammal numbers, diversity, and size increased dramatically
Q219: Suppose that you discover the fossil of
Q220: Which pair of structures evolved into modifications
Q221: Which statement about turtles is false?<br>A) The
Q222: Marsupials differ from eutherians in that<br>A) marsupials
Q224: The _ include New World monkeys, Old
Q225: Which group of organisms corresponds with the
Q226: What three traits evolved in primates that
Q227: Which statement about marsupials is false?<br>A) The
Q228: Which statement is true regarding the amphisbaenians?<br>A)