What do inspiration and expiration have in common?
A. They both conduct air from the outside.
B. They both involve air traveling in the same direction.
C. They both use the same pathways.
D. They both remove wastes from tissues.
E. They both end in the lungs.
Answer: C
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A vertebrate paleontologist is hunting through chalk deposits and finds a set of fused clavicles with some other bone fragments. What has she found?
A. The remains of an amphibian. B. The remains of a lobe-finned fish. C. The remains of a bird. D. The remains of a mammal. 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 bird adaptations? 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?
What does a branch point in a phylogenetic tree represent?
What will be an ideal response?
If a pollen grain fails to generate two sperm cells, what is the most likely result of pollination?
A. The seeds would lack either embryos or endosperm, and so would be nonviable. B. The resulting progeny would be haploid. C. The endosperm would be smaller. D. Half the seeds would develop fine, but the other half would die.
Succulent plants such as cacti or pineapple
A. produce 4-carbon malate in the first step of carbon fixation. B. are C3 plants. C. are highly efficient at photosynthesis in cooler and wet environments. D. tend to undergo substantial rates of photorespiration. E. continually produce sugar, both day and night under hot, arid conditions.