Which phylum is a member of the Radiata clade?
a. Nemertea
b. Porifera
c. Rotifera
d. Ctenophora
e. Echinodermata
ANSWER: d
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Which of the following is NOT true regarding bone repair?
A) immediately after breaking a bone, a hematoma forms as blood clots in the injured area B) Osteoblasts convert cartilage to bone in the injured area. C) a callus of fibrocartilage forms to hold the two broken ends of the bone together D) bones heal more quickly as an individual ages
In a growing population, the youngest age classes have
A. the highest number of deaths/year. B. the fewest individuals. C. the most individuals. D. the smallest number of deaths/year. E. the most individuals and the largest number of deaths/year.
Walking through the botanical garden with a friend, you spy a rare and beautiful variety of Hosta. "Oh I would love to have one of those!" you exclaim. "But they cost a king's ransom." Your friend smiles, snips off a tiny piece of the shoot, and says, "I'll grow you one. I'll just take it back to lab and..."
Ranking Questions __ "wait for somatic embryos to form..." __ "grow up a callus..." __ "culture an individual plantlet for you..." __ "use enzymes to break down the cell walls..."
During embryonic development, animal cells must divide and differentiation to determine what?
a. morphology and anatomy b. anatomy and physiology c. morphology and physiology d. analogy and homology