The innermost whorl of a flower typically consists of one or more ____
a. petals
b. carpels
c. stamens
d. receptacles
e. sepals
ANSWER: b
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In which stage of labor dose the amniotic sac rupture?
a. the first stage b. the second stage c. the third stage d. in either the first or second stage e. in either the second or third stage
Alloploidy provides a mechanism for slow speciation
________ Indicate whether the statement is true or false.
During which stages of bacterial growth is an infected patient most at risk of spreading the organism to others?
A. lag phase and exponential growth phase B. exponential growth phase and stationary growth phase C. stationary growth phase and death phase D. exponential growth phase, stationary growth phase, and death phase
Down syndrome results from the inheritance of
a. only one copy of chromosome 21. b. no copies of chromosome 21. c. an extra copy of chromosome 21. d. two copies of chromosome 21.