The female gametophyte generation in angiosperms is found in the:a
antheridium.
b. prothallium.
c. ovule of the ovary.
d. stigma and style of the pistil.
e. megasporophyte of the cones.
c
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Some species require a large and diverse range. Although it may not significantly decrease the overall size of the range, how might fragmenting the range with a freeway or neighborhood lead to the extinction of the entire population, even if
sufficient food is available in either region to sustain two smaller populations? Suggest a compromise that would allow the population to survive and allow for the road project or neighborhood.
A particular reaction has a negative delta G. However, this reaction takes many years to proceed in the absence of enzyme. Why is this the case?
A. This reaction does not obey the second law of thermodynamics. B. A certain amount of activation energy is required for the reaction to proceed. C. This reaction does not proceed spontaneously. D. The initial free energy of the reactants is much less than the final free energy of the products.
Cladograms ________ true family trees.
A. are not B. are
Tropical climates are warmer than temperate climates because
A. temperate climates have more mountains and thus more snow causing the landmasses to warm slower. B. tropical climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area and causing the tropics to be warmer while the temperate climates receive the sun's rays at an almost perpendicular angle, which causes some areas to be warm and other areas to be cold. C. tropical climates receive the sun's rays at an almost perpendicular angle; since Earth is a sphere, the temperate climates receive the sun's rays at a much steeper incidence thus spreading the radiation over a broader area. D. tropical climates have more vegetation and thus can absorb more heat. E. temperate climates are closer to the poles and the polar surfaces cause a reduction in heat gain.