Chlamydomonas, which is a chlorophyte, undergoes a life cycle common to algae. In favorable conditions, it reproduces via , while in unfavorable conditions, it reproduces , producing a zygospore which undergoes a period of dormancy until conditions improve.

(a) Haploid (b) asexually (c) mitosis (d) sexually.

Explanation: Chlamydomonas which is a chlorophyte, undergoes a Haploid life cycle common to algae. In favorable conditions, it reproduces Asexually via Mitosis, while in unfavorable conditions, it reproduces Sexually , producing a zygospore which undergoes a period of dormancy until improved conditions.

my answer is the prothallium.brainliest