What does the globular stage of plant embryo development give rise to?
A. a double monocot embryo
B. the rhizoid of Fucus
C. the suspensor of the germinating seed
D. the monocot scutellum
E. a heart-shaped dicot embryo
Answer: E
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The pyramid of energy illustrates
a. the first law of thermodynamics. b. the diminishing of usable energy as it is transferred through an ecosystem. c. that energy can be recycled. d. the biological magnification of materials in an ecosystem. e. the diminishing number of organisms at each trophic level.
The largest human autosome is chromosome ________ and the smallest is chromosome ________
A) 1, 22 B) 1, 21 C) 1, Y D) X, 22 E) None of these
Which of the following explains why females are more likely to be "choosy" about mating partners than males?
a. Females are more limited in the number of offspring they can produce than males are b. Eggs require more energy to produce than sperm c. Males can fertilize the eggs of multiple females, while a female's egg can only be fertilized by a single male d. All of these
Animal cells perform functions using energy that is derived from glucose(C6H12O6) Which molecule is required for animal cells to obtain the most energy possible from a molecule of glucose?
A water B oxygen C lactic acid D carbon dioxide