Which of the following is the most diverse and numerous vertebrate class?
a) Class Actinopterygii
b) Class Reptilia
c) Class Chondrichthyes
d) Class Sarcopterygii
e) Class Myxini
Answer: a) Class Actinopterygii
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The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which species would you designate as the outgroup?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
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?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
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?
The minimum number of mutations that is required before cancer is likely to develop is
_____.
a. one b. two c. three d. four
Denitrifying bacteria:a
make nitrogen available for assimilation. b. decompose organic nitrogen compounds into nitrate. c. decompose organic nitrogen compounds into ammonia. d. fix nitrogen into ammonia. e. convert nitrate into atmospheric nitrogen.
A plant embryo enclosed in a protective covering is a(n)
A. pollen. B. egg. C. seed. D. spore.