One of the following, which produces cyanasis in infants of Nitrates, The following inhibits chromosomal disjunction during gamete formation of Mercury

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Free Online Mock Biology Multiple Choice Test on Organism and Environment

Sub Category : Organism and Environment	Test : 3	Time Left :
1.Which of the following inhibits chromosomal disjunction during gamete formation?
(1) Lead (2) Mercury (3) Cadmium (4) Copper.
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2.What causes the reduction in no. of Lady bird beetle in Australia?
(1) PNB (2) DDT (3) Aldrin (4) Endrin.
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3.The phenomenon of producing adverse ecological effects of subs. in later periods
(1) Ecologicl (2) Backlash (3) Both of them (4) None of these.
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4.One of the following is not discharged by automobiles?
(1) CO (2) Flyash (3) O3 and other harmful sub (4) HCI.
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5.One of the following, which produces cyanasis in infants??
(1) Sulphates (2) Fluorne (3) Lead (4) Nitrates.

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Free Online Mock Biology Multiple Choice Test on Organism and Environment