Question

The filaments of spirogyra aplanospora are observed. One of the filaments has 150 cells another contains 225 cells. If all the cells in both the filaments are involved in asexual reproduction, what is the ratio of new filaments developed from them?

• A. 1 : 1
• B. 3 : 5
• C. 1 : 2
• D. 2 : 3

Answer 1

The correct option is A 1 : 1

The asexual reproduction in Spirogyra takes place by the process of fragmentation of filaments. So, whatever be the number of cells in the filament, the filament will split into two fragments.
So, the ratio of new filaments will be 1:1.
Thus, the correct answer is option (A).