Question

2
It is an aquatic plant and
it needs to keep itself
from sinking. Thus, its
leaves are filled with air
and it floats. By staying
afloat, it is able to absorb
maximum sunlight and
can easily exchange gases with the atmosphere.
HTNICAYH RETAW​

Answer 1

Underwater photosynthesis of submerged plants – recent advances and methods

Ole Pedersen1,2,3*, Timothy D. Colmer3 and Kaj Sand-Jensen1

1The Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Hillerød, Denmark

2Institute of Advanced Studies, The University of Western Australia, Crawley, WA, Australia

3School of Plant Biology, The University of Western Australia, Crawley, WA, Australia

We describe the general background and the recent advances in research on underwater photosynthesis of leaf segments, whole communities, and plant dominated aquatic ecosystems and present contemporary methods tailor made to quantify photosynthesis and carbon fixation under water. The majority of studies of aquatic photosynthesis have been carried out with detached leaves or thalli and this selectiveness influences the perception of the regulation of aquatic photosynthesis