In addition to the defining features of chordates, ALL craniates are distinguished by which of the following combination of features?
A. a cranium and a gnathostome
B. a cranium and neural crest
C. a cranium and protostome development
D. a cranium and an ostracoderm
E. a cranium and an operculum
B. a cranium and neural crest
You might also like to view...
Modern oceanography and marine biology were attributed to:
a. the voyage of the Beagle. b. the discoveries of Alvin. c. the laying of the transatlantic telegraph cable. d. expeditions of Alexander Agassiz. e. the Challenger expedition.
Gastrulation is controlled by signal-sending cells that cause movement of neighboring cells, a process called
__________. Fill in the blank(s) with the appropriate word(s).
While walking in a forest, you find a plant with what appears to be unfertilized seeds located at the bases of woody scales exposed to the air. Yellow dust-like particles coat the surface of the unfertilized seeds. This plant is probably a(n)
A) gymnosperm. B) bryophyte. C) angiosperm. D) alga. E) seedless vascular plant.
Products of diatoms are used in four of the following. Which one is the exception?
A. Biofuels B. Ink C. Filters D. Cleaners E. Insecticides