Q16 of 30 Page 1

Differentiate between active and passive immunity.

OR


Differentiate between outbreeding and outcrossing.


Immunity- is the body’s ability to destroy foreign materials and pathogens in order to prevent further infection



OR



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“Intra-cytoplasmic sperm injection” and “gamete intrafallopian transfer” are two assisted reproductive technologies. How is one different from the other?

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Name two groups of organisms which constitute ‘flocs’. Write their influence on the level of BOD during biological treatment of sewage

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Why is making cells competent essential for biotechnology experiments? List any two ways by which this can be achieved.