In some chordates, the ________ is (are) replaced by ________.
A. gill arches; pharyngeal pouches
B. a vertebral column; notochord
C. dorsal hollow nerve cord; a ventral solid nerve cord
D. notochord; a dorsal hollow nerve cord
E. pharyngeal pouches; gills
Answer: E
You might also like to view...
Green seed color is dominant over yellow seed color. If a plant produces gametes with only
yellow seed color, which of the following must be true?
a. Both parents were homozygous recessive for this trait. b. Both parents carried the recessive trait. c. One parent was homozygous recessive, and the other was homozygous dominant. d. Both parents were homozygous dominant for this trait.
How are the cells of a multicellular animal connected to the external environment? Briefly describe how nutrients and wastes are transferred from these cells to the external environment.
What will be an ideal response?
Which of the following substances are common allergens? a. Fungal spores b. Dust mites c. All of these choices
d. Pollen e. Bees
Multigene families are characterized by clusters of tandemly arranged unique pseudogenes organized as operons
Indicate whether the statement is true or false