Which of the following is most likely to fossilize?
A. a crayfish that died in its muddy burrow by
a creek
B. a jellyfish that died and sunk to the bottom
of the ocean
C. a lizard that died in the leaf litter on the
forest floor
D. a leaf that fell from a tree and landed on
the surface of a pond
E. a snail that died on a rock
A
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Cooksonia is a genus of very early tracheophyte plants. Unlike modern tracheophytes they only grew to a few centimeters in height. What feature provides the best explanation for their diminutive size?
A. They completely lacked vascular tissues. B. They did not have stomata. C. They consisted of only photosynthetic stems, not roots or leaves. D. Cooksonia species were not autotrophic. 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 Cooksonia? 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?
How does the wheat stem rust fungus harm its
host plant?
a. by blocking the flow of water through the plant b. it interferes with the photosynthetic process c. it absorbs plant sugars made in photosynthesis d. it blocks the formation of wheat seeds e. it interferes with flowering
The order of amino acids is the ____ structure of proteins
a. primary b. secondary c. tertiary d. quaternary e. stereo
The bile from the liver is delivered to the ________.
a) stomach b) liver c) small intestine d) colon