The nuclear envelope fragments during the prometaphase stage
__________________ Indicate whether the statement is true or false.
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Choose the true statements about the evolution of flower symmetry.
_____ Some radially symmetric flowers have ancestors with bilaterally symmetric flowers. _____ Having radially symmetric flowers is ancestral to having bilaterally symmetric flowers. _____ All cases of flowers with bilateral symmetry involve the CYCLOIDIA (CYC) gene. _____ Bilateral symmetry in some flowers is a homoplastic character derived through convergent evolution.
Skin contains
a. free neuron endings. b. encapsulated neuron endings. c. no nervous tissue. d. both a and b.
Why is source reduction such an important part of waste management?
A. It avoids the costs associated with recycling or disposal. B. It helps conserve resources. C. It minimizes pollution. D. It saves consumers money. E. All of the above are correct.
You are conducting an experiment to determine what concentration of disinfectant is most effective in killing bacteria. In this example, the concentration of disinfectant would represent the
(a). control. (b). experimental variable. (c). response variable. (d). data. (e). hypothesis.