Four of the five stimuli listed below evoke plant
tropisms. Select the exception.
a. gravity
b. touch
c. mechanical stress
d. light
e. electrical current
Answer: e
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Why do individuals with genetic defects that prevent neutrophil or macrophage development usually die at an early age? Be specific and detailed in your answer to demonstrate your knowledge on the role of these cells in the immune system
What will be an ideal response?
Each antigen has one antigenic determinant site or epitope.
Answer the following statement true (T) or false (F)
What is the correct sequence of stages in the life cycle of the Chinese liver fluke?
A. adult, egg with miracidium, cercaria, sporocyst, rediae, metacercaria, adult. B. adult, egg with miracidium, sporocyst, rediae, metacercaria, cercaria, adult. C. adult, egg with miracidium, metacercaria, sporocyst, rediae, cercaria, adult. D. adult, sporocyst, rediae, cercaria, metacercaria, egg with miracidium, adult. E. adult, egg with miracidium, sporocyst, rediae, cercaria, metacercaria, adult.
As part of your research project, you travel to an island to learn more about the habitats and relationships of flies, spiders, and centipedes. You and your assistant plot out five different areas on the island and count the numbers of flies, spiders, and centipedes living in each plot. Your results show the following: Plot Flies Spiders Centipedes1300254242617103147152147397805791393Based in the information provided, the best explanation for the low numbers of spiders and flies in plot 5 is:
A. centipedes prefer spiders to flies. B. there were not enough flies to support a large centipede population. C. centipedes are actively consuming flies and spiders. D. there were not enough spiders to catch and consume all the flies.