The Gause experiments showed that ________
a. two species of protozoan grown individually had the same growth curve as when grown together
b. competitive exclusion only exists between very different species
c. two species of protozoan could share the same resources
d. competitors cannot coexist in a habitat when they need exactly the same limited resource
d
You might also like to view...
Proteins are polymers formed of structural units called:
A. fatty acids. B. amino acids. C. nucleotides. D. phosphate groups. E. monosaccharides.
Plant species regularly hybridize in nature, but only some crosses result in new polyploid species. Of the crosses below, if each one occurred, which would be most likely to result in a new stable polyploid species?
A. A cross between a 2n gamete and a 1n gamete, forming a 3n hybrid. B. A cross between a 4n gamete and a 1n gamete, forming a 5n hybrid. C. A cross between a species with a CC genome and a species with a DD genome, forming a hybrid with a CD genome. D. A cross between a species with a BB genome and a species with a DD genome, followed by a doubling of chromosomes, forming a hybrid with a BBDD genome. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about polyploidy? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Morphological differences between European beavers and South American ____ contributed to Darwin's thoughts on
species diversification
a. nutrias b. iguanas c. glyptodonts d. armadillos e. beavers
What characteristics of polio virus and infection make it possible that this disease will likely be eradicated? Check all that apply.
A. There is an effective vaccine that prevents polio. B. Polio virus has no animal reservoirs. C. There is effective antiviral therapy for polio infection.