Read the passage and answer the following questions:
After attainment of maturity, all sexually reproducing organisms exhibit events and processes that have remarkable fundamental similarity, even though the structures associated with sexual reproduction are indeed very different. The events of sexual reproduction though elaborate and complex, follow a regular sequence. Sexual reproduction is characterised by the fusion (or fertilisation) of the male and female gametes, the formation of zygote and embryogenesis. For convenience these sequential events may be grouped into three distinct stages namely, the pre-fertilisation, fertilisation and the post-fertilisation events.

What is the process of development of embryo from the zygote is known as ?

Embryogenesis

The correct answer is Option (2)-Embryogenesis

• Cell differentiation: This is the process by which cells become specialized into different types with specific functions. It is a part of embryogenesis but not the overall process of developing an embryo from a zygote.
• Embryogenesis: This is the correct term for the process by which a zygote develops into an embryo. It encompasses all the stages of development, including cell division, differentiation, and the formation of various tissues and organs.
• Fertilisation: This is the process by which male and female gametes (sperm and egg) fuse to form a zygote. It occurs before embryogenesis begins.
• Parthenogenesis: This is a form of asexual reproduction where an embryo develops from an unfertilized egg. It does not involve the formation of a zygote from the fusion of gametes.

Therefore, the correct answer is: Embryogenesis