Question 8 Fill in the blanks with suitable words. (a) The roots of a plant take up oxygen from the___ trapped between the ___ particles. (b) Diaphragm forms the ___ of the chest cavity. (c) Exchange of gases in the leaves take place with the help of ___. (d) Cockroaches breathe with the help of air tubes called ___.
The floor of the chest cavity has a thick muscular partition known as the diaphragm.
Fill in the following blanks with suitable words : (a) Biomass is another form in which ___ energy manifests itself. (b) Tidal waves build up and recede ___ a day .