We know the streamlined bodies shown in the figure above are examples of homoplasy. If the following groups also had streamlined bodies, which of the groupings would give the most support to this body type being homologous?
A) lizards and elephants
B) pterosaurs, dinosaurs, and birds
C) synapsids, monotremes, marsupials, rodents, and primates
D) lizards, pterosaurs, dinosaurs, birds, synapsids, monotremes, marsupials, rodents, and primates
Answer: D) lizards, pterosaurs, dinosaurs, birds, synapsids, monotremes, marsupials, rodents, and primates
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The most plausible explanation for the high number of spiders in plot 4 is:
A. there are too many flies overall.
B. there are no centipedes to prey on the spiders and there are abundant flies upon which to feed.
C. the spiders preyed on the centipedes and ignored the flies.
D. the flies and spiders worked together to eliminate the centipedes
Clarify Question
1. What is the key concept addressed by the question?
2. What type of thinking is required?
3. What key words does the question contain and what do they mean?
Gather Content
1. What do you know about food webs?How does it relate to the question?
Consider Possibilities
1. What other information is related to the question? Which information is most useful?
2. Which food webs make sense?
choose Answer
1. Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
1. 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 antiparallel polarity of the two DNA strands within the double helix affects DNA replication in that
A) it takes twice as long to replicate two strands sequentially from 5? to 3?. B) circular bacterial DNA does not have polarity, so a single strand can be copied twice. C) DNA polymerases synthesizing both strands move in the direction of the replication fork, one strand is replicated discontinuously. D) each portion of the double helix must be unwound twice so that both strands are replicated continuously.
What is the main benefit of identifying biodiversity hotspots?
a. Protecting endemic species b. Restoring keystone species c. Facilitating captive breeding d. Monitoring climate change
Which of these types of animals would you expect to find in the deepest rock layers?
A) whales B) fish C) parrots D) frogs