Which of the following pairs contain an error?
A. stigma: captures pollen
B. anther: produces pollen
C. ovary: contains and protects ovules
D. style: produces ovules
E. carpel: female portion of flower
D
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How does inefficient transfer of energy among trophic levels result in the typically high endangerment status of many top-level predators?
A) Top-level predators are destined to have small populations that are sparsely distributed. B) Predators have relatively large population sizes. C) Predators are more disease-prone than animals at lower trophic levels. D) Predators have short life spans and short reproductive periods. E) Top-level predators are more likely to be stricken with parasites.
Explain how diet plays a role in host susceptibility to infection
What will be an ideal response?
The plasma membrane functions as a
a. selective barrier to the passage of molecules. b. site for the uptake of macromolecules into the cell. c. site for cell-cell interactions. d. All of the above
How would the endocrine and nervous systems respond to an individual touching a hot stove?
A. sending signals that cause the individual to move his/her whole body away B. sending signals that cause the release of epinephrine C. sending signals that pull the individual's hand away D. sending signals that cause the release of norepinephrine E. the endocrine and nervous systems would cause an individual to do all of these things