carbondioxide reacts in water to form carbonicacid how do plants in water take carbondioxide in photosynthesis

Question

carbon dioxide dissolves in water to form carbonc acid but the plants in water need carbon dioxde for preparing their food so from where do they get carbon dioxide?

Answer 1

No guess. The water plants absorb carbon dioxide from the air. Most aquatic plants have portions floating on the Water surface. like lillis, and other plants have stems and leaves higher up in the air. Submerged plants can absorb dissolved carbon dioxide in the water. Carbon dioxide takes some time to dissolve into the water to form weak carbonic acid. Carbonic acid can dissociate and release CO2 into the water. A minority of plants can even utilise carbonic acid as a C02 source. Just as the Euphorbia class of desert plants absorb CO2 at night, when their stomata open and lose less water), and convert it into an acid, (forget which one), and then change it into CO2 & utilise it during the day when photosynthesis occurs), and their stomata are closed.
Doc. Dan.

Answer 2

The dissolution of CO2 in water is a highly reversible reaction, the dissolved CO2 easily gets released on chnging the external conditions... So it is no problem for plants to utilise the dissolved CO2. In any case, CO2 (or for that matter, any compound) can be transported between cells only in the dissolved state. All biochemical are ionic, which means CO2 reacts only as the carbonate or bicarbonate ions in the photosythetic reactions.

Answer 3

I would guess through their leaves.