Question
Biology Question on Pre-Fertilisation: Structures And Events
Which one of the following shows heterothallism?
A
Rhizopus
B
Bacterium
C
Cycas
D
Ricinus
Answer
Rhizopus
Explanation
Solution
Heterothallism was discovered by AF Blackeslee (1904) in Rhizopus stolonifer. In this phenomenon, fungi shows fusion of gametes which belong to genetically, morphologically and physiologically dissimilar mycelia normally referred as positive and negative strains.