In the bryophytes, the sporophyte is
a. the dominant generation.
b. dependent on the gametophyte generation.
c. able to produce all of its own nutritional requirements.
d. both a and c.
d
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Some cells have several nuclei per cell. How could such multinucleated cells be explained?
A) The cell underwent repeated cytokinesis but no mitosis. B) The cell underwent repeated mitosis with simultaneous cytokinesis. C) The cell underwent repeated mitosis, but cytokinesis did not occur. D) The cell had multiple S phases before it entered mitosis.
In Figure 3.1, line "a." points to the microscope's
a. Illuminator. b. Condenser. c. Ocular lens. d. Objective lens.
Chromosomes can be condensed into compact structures, visible with the light microscope, but usually only
A. while the nuclear pores are open. B. while the DNA is being copied into RNA. C. after the cell is dead. D. while the proteins are being assembled. E. during cell division.
Bryophyte spores are ________.
A. haploid B. diploid C. both diploid and haploid depending on the generation D. neither diploid nor haploid