A group that contains species from separate evolutionary lineages is considered ____
a. paraphyletic
b. polyphyletic
c. monophyletic
d. haplophyletic
e. multiphyletic
ANSWER: b
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Biological molecules with dipole moments:
A. are typically called nonpolar molecules. B. are typically called polar molecules. C. are found in environments in which they can interact with other nonpolar molecules. D. always display resonance. E. also have no single electrons in their outer valence shell.
Hepaticophytes lack stomata and tracheids. What would provide evidence to justify their inclusion in the Bryophytes and not the Charophytes?
A. Cellulose in their cell walls B. Genes for ABA signalling C. The use of chlorophyll D. A haplodiplontic lifecycle Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about hepaticophytes? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Which of the following correctly describes bases that pair with each other in the DNA double helix?
A. Adenine bonds with guanine. B. Guanine bonds with thymine. C. Thymine bonds with cytosine. D. Cytosine bonds with guanine E. Guanine bonds with thymine.
The difference between an akinete and endospore is that
A. Akinetes cannot resist stressful conditions whereas endospores can. B. Akinetes are not capable of locomotion whereas endospores move freely. C. Endospores cannot resist stressful conditions whereas akinetes can. D. Akinetes are whole cells filled with food, whereas endospores are bodies produced inside of cells. E. Akinetes are reproductive structures whereas endospores are dormant, resistant structures.