In which order were the key features of complex multicellularity likely to have appeared?
A. cell adhesion, cell communication,
regulated growth and development
B. cell communication, cell adhesion,
regulated growth and development
C. regulated growth and development, cell
communication, cell adhesion
D. regulated growth and development, cell
adhesion, cell communication
A
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The plant hormone that prevents seed germination even if conditions of temperature and moisture conditions are appropriate would be:
A. auxins B. gibberellins C. ethylene D. abscisic acid E. brassinosteroids
What is a criticism of the hydrothermal vent origin of life theory?
a. Hydrothermal vents are too hot and would have destroyed the organic molecules even as they formed. b. Hydrothermal vents are too salty and would have destroyed the organic molecules even as they formed. c. Hydrothermal vents are unstable in general and would have dissipated the organic molecules. d. Hydrothermal vents lack sufficient oxygen for the evolution of aerobic organisms. e. Hydrothermal vents contain too many dissolved mineral ions.
Analysis of mitochondrial DNA from different species of stickleback fish in three lakes disproves the hypothesis of a
common ancestor for all three species. __________________ Indicate whether the statement is true or false.
What level of taxonomy is Eukarya?
What will be an ideal response?