What is the correct order in which these structures form during the plant reproduction process? . a. embryo sac, embryo, zygote. b. embryo sac, zygote, embryo. c. zygote, embryo sac, embryo. d. embryo, zygote, embryo sac.

Answer choice C.

The ovum is fertilized by a sperm in the fallopian tube. After fertilization the ovum/sperm combo is called a zygote.

The zygote starts to divide & makes it way into the uterus, where it plants itself & starts to form the placenta and embryonic sac.

Hope that helps!

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature