Photosynthesis in Aquatic Plants
1·0
0·9
0·8
0·7
ClJ
u
0·6
c:
ro
"' D.. O· 5
'~ 0'4
.0
0·2
0·1
o
a
c:
o
+ro
+1'5
1·0
fi: 0·5
o
b
30
2
3
2
3
305
4
5
6
7
8
9
10
r / )Jm
6
7
8
9
10
Fig. 15.2. a Computed absorbance of spherical chlorophyte cells in vector 435 nm radiaton
as a function of cell radius (r) for three chromophore concentrations (mol chromophore
per m 3 cell volume). (After Raven 1984b). Three mol chromophore m- 3 corresponds to
40 g thylakoid per kg dry weight; 10 mol chromophore m- 3 corresponds to 133 g thylakoid
per kg dry weight; 30 mol chromophore m - 3 corresponds to 400 g thylakoid per kg dry
weight (Raven 1984b). b Computed rate of rotation of spherical cells at 20°C as a
function of cell radius (r). (Berg 1983; Mitchell 1991)