Thrips are insects that feed on rose pollen. Scientists noted that the thrips population increased in the spring and decreased dramatically during the summer. The researchers hypothesized that food abundance was the limiting factor for the population. Which of the following types of data would be most useful for the scientists to collect at regular intervals on a designated test plot of rose plants?
A) Amount of sunlight (hours/day)
B) Mean temperature (oC)
C) Density of rose pollen produced (g/m2)
D) Amount of pollen produced by each flower (g/flower)
Answer: C) Density of rose pollen produced (g/m2)
You might also like to view...
In general, the more narrow a species’ habitat tolerance the larger the range of that species.
Indicate whether the statement is true or false.
The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is
____. a. 0% b. 25% c. 50% d. 75% e. 100%
Viral proteins can damage host cells by:
a. increasing the rate of fermentation within the host. b. producing endotoxins. c. causing a decline in coordination and increased irritability. d. preventing transcription of viral nucleic acids. e. overwhelming the host cell with a large number of viruses.
Intracellular steroid hormone receptors have binding sites for a signaling molecule and a DNA sequence
How is it that the same steroid hormone receptor, which binds to a specific DNA sequence, can regulate different genes in different cell types?