Exposer to air is necessary for microbial growth.
a. true
b. false
Ans: b. false
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One line of evidence for endosymbiosis is that chloroplasts resemble ____
a. anaerobic bacteria b. aerobic bacteria c. fungi d. protists e. cyanobacteria
Which of the following are in order from primary producer to fourth trophic level?
a. grass ? coyote ? bird ?grasshopper b. coyote ? bird ? grasshopper ? grass c. bird ? grasshopper ? grass ? coyote d. grass ? grasshopper ? bird ? coyote e. grasshopper ? grass ? bird ? coyote
What advantage do gymnosperms have over ferns?
A. Gymnosperms produce pollen and do not require water to reproduce. B. Gymnosperms have alternation of generations. C. Gymnosperms have a vascular system, which allows them to grow taller. D. Gymnosperms can grow larger gametophytes. E. Gymnosperms can produce flowers and fruits to aid in seed dispersal.
Only pre-synaptic neurons are coated with myelin.
a. true b. false