Photosynthesis and Respiration — Question 16

Fill in the blanks :

1. Plants release ............... gas as a by product during photosynthesis.
2. Plants use ............... gas in the process of respiration during day time.
3. ............... gas turns lime water milky.
4. ............... is used to decolourise the leaf.
5. Iodine solution turns ............... into blue-black colour.