Question

write short and sweet note on embryology .

Answer 1

Embryology is a study of the origin and development of animals dealing with changes through which a fertilised egg must pass before it assumes the adult state. Fertilisation of an ovum by a spermatozoon results in the formation of a zygote. Development of a single-celled zygote into an adult involves a series of steps or stages resulting in a gradual increase in the complexity of structure.The stages of embryonic development differ in various chordates, yet the chief phases arebasically similar in all. The differences are related primarily tothe amount and distribution of yolk present in an egg. The inert yolk or vitellin furnishes nourishment for the developing embryo.

Answer 2

{Hello}

(1)Embryology is the science which deal with the study of development of an organism from an embryo.

(2)Comparative study of embryonic developmental stages of various vertebrates shows that all embryos have extreme similarities during initial stages and those similarities decrease gradually.

(3)Similarities in initial stages indicate the common origin for all these animals.

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