33.
A:
Haploid basidiospores infect wheat, dikaryotic aecidiospores infect barberry
B:
Haploid aecidiospore infect wheat, dikaryotic basidiospore infect barberry
C:
Haploid basidiospores infect barberry, dikaryotic aecidiospores infect wheat
D:
Haploid teleutospore infect wheat, dikaryotic basidiospore infect barberry
The answer is: C