Class IX

Both male and female flowers on same plant are found in
  1. Monoecious plants
  2. dioecious plants
  3. unisexual plants
  4. monocotyledonous plants
Metal is a/an
  1. renewable resource
  2. non-renewable resource
  3. artificial resource
  4. element
Kidney tubules are also called as
  1. collecting tubules
  2. renal pelvis
  3. ureter
  4. nephrons
Time required to replace one unit of blood is
  1. 17 hours
  2. 47 hours
  3. 72 hours
  4. 97 hours
Stomatal guard cells perform all functions but
  1. producing sugars
  2. protecting inner regions of leaf
  3. regulating amount of water lost
  4. chloroplast storage
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