A male that mates for the optimal time will not fertilize all of the eggs carried by a female.
a. true
b. false
Answer: a. true
The optimal mating time will maximize the number of eggs fertilized by the male, not the number of eggs fertilized in one female.
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A common adaptation of coastal plants that grow on sand dunes is
A. deep roots to extract moisture. B. broad leaves for enhanced photosynthesis. C. secretion of proteinaceous threads. D. increased transpiration of water. E. elevated growth rates.
What molecule carries out most of the activities of life, including the synthesis of all other biological
molecules?
a. carbohydrate b. lipid c. protein d. nucleic acid e. carbon
One of the most common causes of mental retardation in the United States is
a. congenital rubella syndrome. b. cocaine addiction. c. fetal alcohol syndrome. d. use of thalidomide by pregnant women. e. use of tetracycline by pregnant women.
Which term refers to a special capsule or chamber where a plant will make the first cells of the gametophyte generation?
a. sporangium b. rhizome c. vascular system d. shoot system