Assertion: Spirogyra shows haplontic life cycle.
Reason: Zygotic meiosis occurs in Spirogyra.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

a

Explanation

A life cycle characterized by a haploid thallus, and zygotic meiosis is called haplontic life cycle it is also called as haplobiontic because onl a single type of free living individual is involved in the life cycle. Spirogyra shows haplontic life cycle and therefore, it also shows zygotic nucleus.