dX

, g a . . , X , . ,
(Jrowtli ot a microbe m a test tube is modeled as dt = 12X (1 K). where. .\ is the biomass. r is the

growth rate. and K is the carrying capacity of the environment (r = O: K at 0). If the value of
K

staiting biomass is E‘ which one of the following graphs qualitatively represents the growth

dmamics‘?

(A) (Bl (C)

(D)
3‘ f a i ;|

T'me (t) Tlme (t) Tlme (t) Tgm. ‘t’

in Others