Land plants evolved from which of the following groups?
A. green algae
B. brown algae
C. red algae
D. complex fungi
E. None of the answer options is correct.
A
Biology & Microbiology
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Seminal vesicles secrete fructose and ____ into the semen
a. DHT b. oxytocin c. testosterone d. estrogen e. prostaglandins
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Which group of fishes evolved first (in other words, is most ancient)?
A. Bony fishes B. Cartilaginous fishes C. Lobe-finned fishes D. Jawless fishes
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The flow volume and temperature of a stream are unaffected by ____
a. oxygen content b. rainfall c. snowmelt d. shade cast by plants e. altitude
Biology & Microbiology
Methane is a significant part of the carbon cycle in ________ environments dominated by methanogens.
A. thermophilic B. autotrophic C. anaerobic D. oligotrophic
Biology & Microbiology