Most species of ctenophore are:
a. haploid.
b. male or female only.
c. hermaphroditic.
d. asexual.
e. none of the above
C
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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
Competitive exclusion is a result of:
a. interspecific competition. b. intraspecific competition. c. character displacement. d. succession. e. community complexity
Sexual reproduction
A. results in the formation of a haploid zygote. B. only occurs in vertebrates. C. allows a parent to pass on 100% of their genes to offspring. D. increases genetic variation. E. allows more offspring to be produced per individual.
Bacteria lacking the gene that encodes for the MreB protein are ________-shaped
a. coccoid b. bacillus c. spirillum d. vibrio