Class IX

Blood in pulmonary arteries is at a lower pressure than blood in aorta allowing
  1. tricuspid valve to shut
  2. bicuspid valve to shut
  3. gaseous exchange to effectively take place in lungs
  4. semi lunar valves to prevent backflow of blood
Transference of food from one trophic level to next is
  1. accompanied with an energy gain
  2. accompanied with energy loss
  3. accompanied with macronutrients only
  4. accompanied with micronutrients only
Vertebral column faces the
  1. concave side of kidneys
  2. convex side of kidneys
  3. convex side of kidneys
  4. inferior side of kidney
All are characteristics of energy, but,
  1. energy can not be created
  2. energy can not be destroyed
  3. energy can be converted from one form to other
  4. energy is never lost
Seeds may be
  1. endospermic
  2. non-endospermic
  3. ectospermic
  4. both A and B
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LKG - 12th

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