A) male and female sex organs occurring in the same thallus
B) male and female sex organs occurring in different thallus
C) the differentiation of thallus shapes
D) the absence of sex organs
Correct Answer: B
Solution :
Blakeslee (1904) while working with Mucor observed that in some species sexual union was possible between two hvphae of same mycelium, in others it occurred between two hyphae derived from different spores. Former phenomenon is called homothalism and latter as heterothallism.
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