Biology, 19.08.2019 17:30, azibur3191
In colorado subalpine meadows, nonnative dandelions co-occur with a native flower, the larkspur. bumblebees visit both species, creating the potential for interactions between the two species with respect to pollination. in a recent study, researchers selected 16 plots containing both species; all dandelions were removed from eight plots; the remaining eight control plots were left undisturbed. the control plots yielded significantly more larkspur seeds than the dandelion-free plots, leading the researchers to conclude that the presence of dandelions facilitates pollination (and hence seed production) in the native specifies by attracting more pollinators to the mixed plots. which of the following, if true, most seriously undermines the researchersā reasoning?
(a) bumblebees preferentially visit dandelions over larkspurs in mixed plots.
(b) in mixed plots, pollinators can transfer pollen from one species to another to augment seed production.
(c) if left unchecked, nonnative species like dandelions quickly crowd out native species.
(d) seed germination is a more reliable measure of a speciesā ļ¬tness than seed production.
(e) soil disturbances can result in fewer blooms, and hence lower seed production.
Answers: 1
Biology, 21.06.2019 22:30, ashley2816
Anita thinks that she has heterozygous alleles for red hair. if she is correct, which of these diagrams best illustrates anitas alleles pf red hair
Answers: 3
Biology, 21.06.2019 23:10, ExperimentsDIYS
(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.
Answers: 1
In colorado subalpine meadows, nonnative dandelions co-occur with a native flower, the larkspur. bum...
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