give one use of carbondioxode in living organism

Q. Aquatic plants make use of dissolved carbondioxide for photosynthesis, i.e., to prepare their food. Give the required equation in the process :

Q. Who discovered cell in living organism ? Give an example of a unicellular organism

Q. Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i)$\text{Glucose}\stackrel{\text{Respiration}}{\to }\text{Ethanol}+\text{Carbon dioxide}+\text{Energy}$
(ii)$\text{Glucose}\stackrel{\text{Respiration}}{\to }\text{Carbon dioxide}+\text{Water}+\text{Energy}$
(iii) $\text{Glucose}\stackrel{\text{Respiration}}{\to }\text{Lactic acid}+\text{Energy}$

(b) Name one organism which respires according to equation (ii) above.

Q. Carbondioxide is used in:

Q. Name the three types of skeletons that living organisms have. Give one example of each.