Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? (1) Nitrous oxide (2) Carbon dioxide (3) Chlorofluorocarbon (4) Sulphur dioxide Answer : Chlorofluorocarbon...
Spraying of DDT produces pollution of a) Air b) Air and Water c) Air and Soil d) Air, Water and Soil. Answer : d) Air, Water and Soil....
Ozone hole causes a) Global warming b) Reduction in the rate of photosynthesis c) More UV rays come to earth d) All the above. Answer : c) More UV rays come to earth...
Increasing high skin cancer and high mutation rate are a) O3 depletion b) Acid rain c) CO pollution d) CO2 Pollution. Answer : a) O3 depletion...
Describe the cell organelle which is responsible for the synthesis of starch. Answer : The cell organelle responsible for the formation of starch is Chloroplast. It was discovered by Sachs and named by Schimper. It is usually disc shaped or Biconvex or Oval or spherical. ... granum and the unstacked thylakoids that connect the adjacent grana are called as Stroma thylakoids. ...
50.5k questions
47.1k answers
240 comments
7.0k users
