Which organisms best illustrates K-selection?
A) the production of thousands of eggs every spring by frogs
B) mice that produce three litters of 10-15 babies in the course of a summer
C) a polar bear producing one or two cubs every three years
D) a species of weed that quickly spreads into a region of cleared trees
Answer: C
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An example of an endotherm is a ____
a. mouse b. salamander c. turtle d. frog e. snake
A baby born without a thymus:a
would not have an antibody mediated immune response. b. would not produce lymphocytes. c. would not produce immunocompetent T cells. d. will lack the ability to mount an immune response. e. will lack antigen presenting cells.
Which of the following cell types conducts water most rapidly through a plant?
A. Parenchyma cells B. Sclerenchyma cells C. Sieve tubes D. Phloem E. Vessel members
All of the following occur during the light-independent reactions EXCEPT
A. carbon fixation. B. phosphorylation of ADP to form ATP. C. regeneration or RuBP. D. reduction of intermediates by NADPH.