Parasitic and scavenger fish

A) sharks and rays
B) lamprey and hagfish
C) bony fish
D) coelacanths


Ans: B) lamprey and hagfish

Biology & Microbiology

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What will be an ideal response?

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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.

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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.

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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.

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