Fertilization of plant gametes produces a ________________.
A. zygote
B. gametophyte
C. spore
D. meiospore
E. multicellular haploid plant
Answer: A
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In aquatic systems no fish can survive in oxygen
concentrations below a. 18 ppm b. 4 ppm c. 12 ppm d. 14 ppm e. none of these
Which of the following terms accurately describes the replication of DNA in vivo?
A) dispersive B) conservative C) semidiscontinuous D) continuous E) nonlinear
The membranous labyrinth of the inner ear consists of the:a
saccule, utricle, and three semicircular canals.
b. vestibular canal and oval window. c. cochlea, tympanum, and three bones. d. statoliths and hair cells. e. endolymph, perilymph, and the organ of Corti.
Which of the following is the best interpretation of the graph below of mussel size (x-axis) versus energy gain (line graph, left y-axis), and number of mussels eaten per day (histogram, right y-axis)? 
A. Crabs select mussels in a way that maximizes their energy gain. B. Mussel size does not seem to be a good predictor as to which mussel hungry crabs will select. C. Crabs prefer the mussels with the smallest length for their food resources. D. Mussels are selected as food sources by crabs. E. Crabs tend to consume most of the largest mussels.