An organism that can exist in both oxygen and oxygen-free environments is a(n)
A. facultative anaerobe.
B. microaerophile.
C. obligate anaerobe.
D. obligate aerobe.
E. aerobe.
Answer: A
You might also like to view...
Developing truffles produce a chemical that attracts what kind of organism for spore dispersal?
A. pigs B. flies C. ants D. amphibians E. birds
When one plant is shaded by another, why is the ratio of far-red to red light increased compared to an unshaded plant?
A. Phytochrome in the taller plant absorbs most of the red light. B. Auxin absorbs mostly far-red light. C. As light passes through the leaves of the taller plant, most of the red light is absorbed by chlorophyll. D. Far-red light mostly reflects off the surface of the soil while red light is mostly absorbed. E. Shade is enriched in far-red wavelengths of light.
Organisms made up of one cell are said to be ________
Fill in the blank(s) with correct word
Sponges _____
A) have larvae which are motile and move via the motion of cilia B) are the simplest diploblastic animals C) have a nerve net but not a central nervous system D) have feeding cells called dinoflagellates