Which of the following series of events correctly describes the evolutionary history of the vertebrates, from earliest to latest in time?
a. four limbs ? hair ? lungs ? jaws
b. jaws ? lungs ? four limbs ? hair
c. hair ? four limbs ? lungs ? jaws
d. lungs ? jaws ? four limbs ? hair
e. four limbs ? lungs ? jaws ? hair
Ans: b. jaws ? lungs ? four limbs ? hair
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During this stage of mitosis, the nuclear envelope begins to break down and the spindle begins to form.
A. Anaphase B. Metaphase C. Prophase D. Telophase E. Prometaphase
Bacteria that contain complex internal membrane systems are more likely to divide by budding than by binary fission
Indicate whether the statement is true or false.
How does temperature-driven vertical turnover occur, and what is its importance?
What will be an ideal response?
The phyla Bryozoa and Brachiopoda have which feature in common?
A. a radula B. nephridia C. setae D. a muscular foot E. a lophophore