Predation is considered a density-dependent factor that controls the population size of prey species. Give two examples of predators acting in density-dependent ways in response to fluctuations in the size of prey populations
What will be an ideal response?
Predators may adjust the number of prey that they eat in response to the abundance of their prey. They might switch to alternative food sources when prey are scarce or feed exclusively on the prey that is abundant. In addition, predators may regulate the number of offspring they produce in response to the abundance of their prey.
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What reproductive advantage do fruits give a flowering plant?
What will be an ideal response?
A pine tree is called a sporophyte because it
a. develops from a germinated spore. b. produces spores by meiosis. c. is haploid. d. undergoes fertilization. e. reproduces by both sexual and asexual means.
Individuals with ____________________ are extremely sensitive to sunlight and develop skin cancer at a rate 1000
times above normal. Fill in the blank(s) with the appropriate word(s).
In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions.
Fill in the blank(s) with the appropriate word(s).