Which of the following is not true about ferns?
a. their gametophytes and sporophytes are both photosynthetic
b. their sporophytes are much smaller than the gametophytes
c. their underground stem is called a rhizome
d. their leaves are called fronds
e. clustered, stalked sporangia called sori arise on the backs of the fronds
Answer: b. their sporophytes are much smaller than the gametophytes
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Courtship for Anolis lizards involves the male displaying a dewlap (skin under the throat area) that varies in appearance based upon the species. Lizards that are found in darker, more shaded environments will have dewlaps that are lighter in color because they are more noticeable by potential mates. Which of the following mechanisms best explains how speciation is at work in this example?
A. Postzygotic isolation B. Reinforcement C. Genetic drift D. Natural selection Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about speciation? What other information is related to the question? 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?
The use of the suffix "ase" on a word denotes a(n)
A. substrate. B. product. C. enzyme. D. electron acceptor. E. substrate AND electron acceptor.
Identify three of the five basic themes in biology:I
The cellular composition of life II. The evolution of life III. The interactions of living systems IV. The mechanisms of disease V. The transmission of information a. I, II, and III b. II, III, and IV c. III, IV, and V d. I, IV, and V e. II, III, and V
An individual human can be thought of as a ________, consisting of a host and a variety of microbes. DNA from saliva or fecal samples, for example, would reveal the DNA genomes of both the host and its symbiotic microbes, known together as the ________.
A. holobiont, hologenome B. microbiome, hologenome C. microbiome, microgenome D. hologenome, holobiont