Which of the following are single-celled microscopic members of the animal kingdom?
a. Flatworms
b. Rickettsiae
c. Helminths
d. Protozoa
d. Protozoa
You might also like to view...
Photosynthesis occurs in ____, while cellular respiration occurs in ____
a. plants; animals b. animals; plants
c. plants and animals; animals d. plants; plants and animals e. plants and animals; plants and animals
What are skeletal muscles attached to the bones by?
What will be an ideal response?
One of your closest fish relatives is the coelacanth. Where is its equivalent to your forearm?
A. The pelvic fin lobe B. The operculum C. The claspers D. The gill arch extensions E. The pectoral fin lobe
In accordance with the principle of parsimony, scientists
A) propose phylogenetic trees that minimize the number of evolutionary changes. B) adopt phylogenetic trees in which adaptations repeatedly arise, disappear, and reappear. C) construct phylogenetic trees with many small clades rather than with a few major clades. D) utilize the Linnaean system of nomenclature rather than common names.