In pine trees, the male gametophyte is
a. a megaspore.
b. the embryonic pine seed.
c. a pollen tube.
d. a pollen grain.
e. a microspore.
Answer: d
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The tooth morphology of an animal is related to its diet
a. True b. False
Scientists think diplomonads and amoeboflagellates are primitive and that their characteristics are similar to those of the first eukaryotic cells. What does this tell you about what the first eukaryotes were like and what kind of environment they might have inhabited?
What will be an ideal response?
How did mitochondria and chloroplasts arise in eukaryotic cells?
A) Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell B) Via binary fission, where bacteria divided to create mitochondria and chloroplasts C) Via the endomembrane system that engulfed mitochondria and chloroplasts D) Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts
Specialized cell surface proteins on the neck of Mycoplasma mobile allow for ________.
A. flagellar motility B. "inchworm" motility C. "rolling" motility D. gliding motility