Mosses and flowering plants differ in their dominant life cycle stages. Coleochaete is a multicellular algae that is considered to be the closest living relative of land plants. Coleochaete spend their entire life as a haploid organism. In what major way do these algae differ from mosses and flowering plants?
A. They do not undergo alternation of generations.
B. They have a more prominent sporophyte generation.
C. They do not undergo mitosis.
D. They do not undergo photosynthesis.
Answer: A
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Which of the following represents the highest level of chromosome condensation?
A. Radial loop domain B. 30 nm fibers C. Double helix D. Nucleosome E. Heterochromatin
Both walnut and Gingko trees lose their leaves in the fall when day length starts decreasing. Based on these observations one may conclude that many tree species will lose their leaves in the fall in response to decreasing day length. This statement is an example of:
A. inductive reasoning B. a theory C. deductive reasoning D. an experiment
How much does the uterus stretch in order to accommodate a growing fetus?
A. 3 times normal size B. 2 times normal size C. 5 times normal size D. 4 times normal size E. 6 times normal size
When step "d" is completed, the two DNA molecules produced will be
a. identical to each other but not to the parent DNA. b. identical to the parent DNA but not to each other. c. different from each other and the parent DNA. d. identical to each other and to the parent DNA. e. identical to each other and almost the same as the parent DNA.