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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Bacteria lacking the gene that encodes for the MreB protein are ________-shaped
a. coccoid b. bacillus c. spirillum d. vibrio
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.
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