Which primary producer listed below is considered the most abundant life form in the sea?

a. Dunaliella
b. Synechoccus
c. Methanococcus
d. Pryolobus
e. Prochlorococcus


E

Biology & Microbiology

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A pollen tube together with its contents of male gametes constitutes the ____

a. male reproductive organ b. endosperm mother cell c. mature male sporophyte d. immature male gametophyte e. mature male gametophyte

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The accompanying figure is a micrograph of what kind of tissue?

a. cardiac muscle b. skeletal muscle c. nerve tissue d. cartilage e. dense connective

Biology & Microbiology

During interphase of the cell cycle, ________

A) the nuclear membrane disappears B) sister chromatids move to opposite poles C) DNA content essentially doubles D) DNA recombines E) RNA replicates

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________ are heterotrophic protists; ________ are photoautotrophic protists

A) Mixotrophs; protozoans B) Protozoans; algae C) Protozoans; plants D) Parasites; protozoans

Biology & Microbiology