Question

Identify the correct sequence of events in a sexual reproduction process.

• A. Production of ovum $\to$ entry of sperms in female $\to$ fertilisation of egg $\to$ zygote formation
• B. Fertilisation of egg $\to$ embryo formation $\to$ zygote formation $\to$development of zygote in the uterus
• C. Production of sperms $\to$ entry of sperms in females $\to$ zygote formation-production of ovum
• D. Sperm formation $\to$ zygote formation $\to$ embryo formation-fertilisation

Answer 1

The correct option is A Production of ovum $\to$ entry of sperms in female $\to$ fertilisation of egg $\to$ zygote formation

The correct sequence in this question is specified by option (a).
Ovum is produced in the ovary and reaches the oviduct. At the same time, sperm enters the female reproductive tract through the vagina. It reaches the oviduct where the two gametes fuse with each other (fertilisation). After fertilisation, the single celled zygote is formed. It undergoes multiple divisions to form a ball like structure called the embryo.