Class IX

Piliferous layer contains
  1. root cap
  2. root hair
  3. vascular bundles
  4. all of these
Non-toxic, unreactive chemicals used as cooling agents in refrigerators are called as
  1. Chloroflouridocarbonates
  2. chloroflamocarbides
  3. chloroflourocarbonates
  4. chlorofluorocarbon
Sinking of malpighian layer in dermis results in formation of
  1. hair
  2. hair follicles
  3. hair papilla
  4. hair erector muscles
Leaf may absorb maximum light due to
  1. strong petiole
  2. strong petiole
  3. strong turgor pressure in mesophyll cells
  4. closed stomata
Test of Proteins is known as
  1. Iodine Test
  2. Biuret test
  3. Ethanol emulsion test
  4. Benedict Test
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