Parasitic and scavenger fish
A) sharks and rays
B) lamprey and hagfish
C) bony fish
D) coelacanths
Ans: B) lamprey and hagfish
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Is it possible for a cell to contain more than one nucleus? Explain.
What will be an ideal response?
The interaction in which one species benefits
and the second species is neither harmed nor benefited is
a. mutualism. b. parasitism. c. commensalism. d. competition. e. predation.
Sperm find their way to the archegonium
a. by swimming. b. due to a chemical gradient diffusing from the archegonium. c. as a result of sucrose being released during the breakdown of the neck canal cells of the archegonium. d. by all of the above.
Somatic cell nuclear transfer
a. uses differentiated cells. b. uses stem cells. c. produces human embryos for research d. is used to breed livestock e. does all of these.