What is the method of having results evaluated by other experts in the field called?
a) peer review
b) inductive method
c) scientific method.
Ans: a) peer review
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Which of the following statements is not true of early plant evolution, as we have learned from Rhynie cherts?
A. Early vascular plants were small, up to 15 cm tall. B. Early vascular plants branched repeatedly and contained sporangia at their tips. C. The stems of early vascular plants lacked a cuticle or stomata. D. Some of the early plants have a branched sporophyte, but no evidence of vascular tissue. E. Fossils indicate that the roots and leaves of lycophytes evolved independently from those of ferns, horsetails, and seed plants.
If all offspring of a cross have the genotype Aa, the parents of the crosses would most likely be
a. AA ? aa. b. Aa ? Aa. c. Aa ? aa. d. AA ? Aa. e. none of these.
The organelle with a flattened channel that begins at the nuclear envelope and passes into the cytoplasm is the ____
a. nucleus b. nuclear membrane c. Golgi body d. endoplasmic reticulum e. lysosome
More rainfall enters the soil on steep slopes than on level land
Indicate whether the statement is true or false