Class XI

Example sof analgesics include
  1. caffeine
  2. Cocaine
  3. Novocain
  4. Aspirin
Stomata close
  1. in very strong wind
  2. in night
  3. at very high temepratures
  4. both A and B
Number of bronchial tubes, left bronchus gets divided into are
  1. two
  2. three
  3. depends on age of organism
  4. varies in man
Basic building block of protoplasm is
  1. lipids
  2. amino acids
  3. unsaturated fats
  4. cytoplasm
Function of trace elements is to
  1. trace benefits of minerals
  2. trace benefit of vitamins
  3. trace benefits of proteins
  4. none of above
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