Class XI

To get pollens, mature stigma shall
  1. Project out of bracts and hang freely
  2. Provide a large feathery surface area to get pollens floating around
  3. Turn itself non-sticky and decrease its surface area
  4. Turn itself non-feathery and decrease its surface area
When exposed to damp air, cobalt chloride (CoCl2) paper turns to
  1. pink
  2. buff
  3. blue
  4. green
Potometer is used to measure
  1. Rate of root pressure
  2. Capillary action
  3. Transpiration pull
  4. All of these
 Sieve tubes are assisted through
  1. Lumen
  2. Lignin
  3. Companion cells
  4. Pits
Renal artery provides blood to
  1. liver
  2. intestines
  3. kidneys
  4. hind limbs
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