|A.||Chromoplast gets converted into chloroplast|
|B.||Chloroplast gets converted into chromoplast|
|C.||Chloroplast disappears and new chromoplasr arises|
|D.||None of the above|
Explanation:Chloroplast gets converted into chromoplast
|C.||Carbon dioxide||D.||All of the above
Explanation:This entire process is called 'Photo-synthesis' in which the plants use carbon dioxide, water and sunlight to produce sugar.
|A.||Sound waves||B.||Radio waves|
|C.||Electric waves||D.||Ultrasonic waves
Explanation:Full form of RADAR is: Radio Detection and Ranging. It uses radio waves. This is an instrument to find out the precise location of distant objects (especially ships and aircraft) by means of radio waves.
Explanation:Magnesium (Mg) is an essential constituent of chlorophyll in plant leaf. It is also necessary for the formation of oil.
|C.||a mixture of iron and dust|
|D.||a mixture of iron, oxygen and water|
Explanation:As a result of rusting of iron, a red layer of hydrated ferric oxide (Fe2O3.H2) is formed on the surface of iron.