Class X

In plants, extra water is removed with help of
  1. transpiration
  2. respiration
  3. osmosis
  4. diffusion
Steps in urine formation are
  1. pressure filtration
  2. selective re-absorption
  3. tubular secretion
  4. all of above
Example of tree that removes waste material through gums is
  1. coniferous trees
  2. keekar
  3. rubber plant
  4. ladyfinger
Considering anatomy of human kidneys, duct which is formed of many collecting duct and ultimately drained into renal pelvis is called
  1. proximal duct
  2. renal duct
  3. papillary duct
  4. collecting duct
In normal urine composition, potassium ions content is
  1. 0.863g/l
  2. 0.658g/l
  3. 0.925g/l
  4. 0.750g/l
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