Question

Zygote of spirogyra produces four haploid nuclei in which :

• A. One is functional
• B. Two are functional
• C. Three are functional
• D. All are functional

Answer 1

The correct option is A One is functional

zygospore is the union of the protoplasmic mass of two gametes which is called zygote. The diploid zygospore nucleus undergoes meiosis and forms 4 nuclei, three of these aborts and only one is functional prior to germination. It undergoes transverse division to give, rise single filament.

So the correct option is 'One is functional.'