What might one expect to see in a graph depicting realized niche space in a community?
A) one dominant species utilizing all of the resources
B) large overlap between species resource use
C) reduced overlap between species resource use
D) each species utilizing its full resources
C
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Movement of phloem sap from a source to a sink _____
A) occurs through the apoplast of sieve-tube elements B) depends upon active transport of sugars into the sieve-tube elements C) depends on tension, or negative pressure potential D) depends on active transport of water into sieve- tube elements at the source E) results mainly from diffusion of sugars into companion cells
Rank the elements carbon, sodium, calcium, and iodine in order of greatest abundance in living organisms
A. CNaCaI B. ICaNaC C. ICCaNa D. CCaNaI
A 38-year-old woman is going to ovulate in about a week. For how long has the primary oocyte in her Graafian follicle been arrested at prophase I of meiosis?
A. 38 years B. About a day C. 1 week D. 3 weeks
What is the relationship between recombination frequency and the actual physical distance on a chromosome?
A. As physical distance increases, the recombination frequency decreases in a linear fashion. B. As physical distance increases, the recombination frequency first increases, but then decreases. C. As physical distance increases, the recombination frequency increases in a linear fashion. D. As physical distance increases, the recombination frequency first increases in a linear fashion, but gradually levels off to a frequency of 0.5.