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Seeds provide plant offspring with all of the following advantages except A. nourishment of the embryo. B. dispersal of the plant. C. attraction of a pollinator. D. protection of the embryo.
Weegy: Seed dispersal is the movement or transport of seeds away from the parent plant. Plants have limited mobility and consequently rely upon a variety of dispersal vectors to transport their propagules, including both abiotic and biotic vectors. [ [ Seeds can be dispersed away from the parent plant individually or collectively, as well as dispersed in both space and time. The patterns of seed dispersal are determined in large part by the dispersal mechanism and this has important implications for the demographic and genetic structure of plant populations, as well as migration patterns and species interactions. There are five main modes of seed dispersal: gravity, wind, ballistic, water and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus ] ] (More)
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Asked 6/21/2011 8:02:24 AM
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At which stage in the alternation of generations is a zygote produced? A. mitosis B. meiosis C. fertilization D. regeneration
Weegy: C. fertilization (More)
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Asked 6/22/2011 7:07:28 AM
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Which two structures perform the same function? A. the flame cell of a planarian and the gill slit of a fish B. the skin membrane of a frog and the kidney of a human C. the spiracle of an insect and the gastro-vascular cavity of a hydra D. the nephridia of an earthworm and the malpighian tubule of a grasshopper
Weegy: Excretory systems regulate the chemical composition of body fluids by removing metabolic wastes and retaining the proper amounts of water, salts, and nutrients. Components of this system in vertebrates include the kidneys, liver, lungs, and skin. (More)
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Asked 6/22/2011 7:36:19 AM
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does the skin membrane of a frog and the kidney of a human preform the same function?
Weegy: yes. (More)
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Asked 6/22/2011 7:45:43 AM
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