The most direct ancestors of land plants were probably _____
A) kelp (brown alga) that formed large beds near the shorelines
B) green algae
C) photosynthesizing prokaryotes (cyanobacteria)
D) liverworts and mosses
Answer: B
You might also like to view...
The MMR vaccine is used to protect against
A. mononucleosis, mange, rubeola. B. measles, mange, rubeola. C. mononucleosis, mumps, rubella. D. measles, mumps, rubella.
Immunodiffusion tests
A. allow detection of specific antigens. B. are a simple method that produces visible results in the zone of optimal proportion. C. allow quantitation of antigen concentrations. D. All of the choices are correct.
Which of the following is a characteristic shared by both electron and light microscopes?
a. They both employ the use of objective lenses. b. Both microscopes require an internal camera to visualize the specimen. c. Both microscopes have a resolving power of 0.01 nm. d. They both utilize white light to magnify the specimen.
People in the incubation stage of a disease may be a reservoir of the agent.
Answer the following statement true (T) or false (F)