What are the two distinct body plans found in phylum Cnidaria?
a. radial and bilateral
b. cephalized and caudalized
c. polyp and medusa
d. acoelomate and coelomate
c. polyp and medusa
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Schizophrenia and bipolar disorder are caused by _____
a. one gene, plus environmental triggers b. the same gene c. many genes, plus environmental triggers d. copy number variants, without environmental triggers e. the same mutations that cause autism spectrum disorders
Since 1750, the main cause of increased carbon dioxide being released into the atmosphere is:
a. the burning of fossil fuels such as coal and gasoline. b. the burning of wood. c. cattle production. d. erosion. e. decompostion
In both mitosis and meiosis II, ____________.
A. the cells double in number, and the chromosomes in product cells also double in number B. the cells quadruple in number, and the chromosomes are reduced by half in each cell C. the cells double in number, and the number of chromosomes in each cell remains the same D. the cells quadruple in number, and the number of chromosomes in each cell remains the same E. the cells double in number, and the chromosomes are reduced by half in each cell
Classification.Respond to the following statements with reference to the flower parts listed below.
A. Haploid cell that gives rise to the female gametophyte. B. Mitosis and differentiation of this structure produces pollen grains. C. Structure in which a female gametophyte forms. D. Ovules form inside this structure. E. Embryo sporophyte packaged with nutritive tissue inside a protective coat.