Leaves arose several times during plant evolution
a. True
b. False
ANSWER: True
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How did Thomas Malthus's ideas, about human population, affect Darwin's ideas on natural selection?
A. Darwin decided that if human population increased with each successive generation, all animals and plants must reproduce using the same principles. B. Darwin abandoned his idea of natural selection because Malthus' work proved that populations would continually double in number with each generation. C. Thomas Malthus believed that human populations declined when temperature drops, therefore Darwin concluded that all plant species will not reproduce in cold temperatures. D. Mallthus believed that only a fraction of any population will survive and reproduce, Darwin contradicted Malthus's theories and said that all species will continue to survive and reproduce indefinitely. E. Malthus theorized that only a fraction of any human population will survive and reproduce. Darwin's observations during his voyage on the Beagle, supported Malthus' theory.
Match the pathway with the characteristic or example.
A) fungi B) lysosome passage C) C4 plants D) carbon assimilation E) succulents F) nucleic acid replication G) C3 plants H) salvage pathway 1) Calvin cycle 2) glycolate pathway 3) Hatch-Slack cycle 4) crassulacean acid metabolism (CAM)
An operon includes which of the following components?
a. multiple genes b. a promoter c. all of the choices d. one or more operators
What type of tissue covers body surfaces or lines cavities?
a. muscle b. nerve c. endocrine d. epithelial e. connective