Class IX

After decomposition of household sewage, dried substance results in
  1. sludge
  2. fertilizer
  3. land fill
  4. all of these
Muscles are mostly made up of
  1. proteins
  2. starch
  3. fiber
  4. cellulose
One of greatest themes of biology is
  1. Aesthetics
  2. Evolution
  3. Soil Texture
  4. Fish Aquariums
Cretinism results due to
  1. excess of adrenaline
  2. lesser thyroxin
  3. excess insulin
  4. lesser keratin
Median septum
  1. allows exchange of blood between right and left atrium
  2. allows exchange of blood between right and left ventricle
  3. is a semi-permeable membrane
  4. completely separates right and left sides of heart
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