The ________ resemble the ancestor of all animals
a. choanoflagellates
b. dinoflagellates
c. amoeboflagellates
d. euglenoids
e. ciliates
A; Choanoflagellates resemble the collar cells of sponges, which are at the base of the animal radiation. This resemblance does not seem to be a coincidence, as the DNA of the two organisms also shows more similarity than the DNA of animals shows to the DNA any other protistan group.
You might also like to view...
In water, MOST taste- and odor-producing compounds are inorganic in nature
Indicate whether the statement is true or false.
The phenotype of ____ does not develop until adulthood
a. muscular dystrophy b. Marfan syndrome c. cystic fibrosis d. hemophilia e. Huntington's disease
Which structure present in the moss life cycle is diploid?
A. Archegonia B. Spore C. Gametophyte D. Protonema E. Zygote
The adrenal medulla produces hormones in response to
A) stress or exercise. B) light. C) signals from the posterior pituitary. D) reduced blood levels of thyroxine. E) signals from the anterior pituitary.