tell me the answer of question number 5

tell me the answer of question number 5 ALONREI.AN. are some Of the changes thal happen in adolescents the brain? 4 What happens in xvomen's booy in between two menstrual, 5 How do egg laying animuis fertilize their eggs? 6 Name the hormones and their functions secreted by 7 Life begins from a single cell called zygote .Explain the 8 What is meant by the term gestation period? Find out the (a) Elephant (b) Dog (c) Rat (d) Human being Jlow does development of ferfiilized egg of a hen take

Dear student, 
Please find below the solution to the asked query 

Fertilization is the process of the union of an egg and sperm. Let us study how fertilization takes place.
For video, kindly refer the study material of chapter no. 9 on our website. In contrast to viviparous animals, the embryo of the oviparous animals is formed and developed inside the egg. The egg contains nutrition and energy reserves for the embryo. The embryo obtains the energy within the egg for its development. There is usually a protective shell present outside the egg. A small air sac is present in the egg from which the developing embryo gets oxygen. Apart from this, there are many microscopic pores present on the surface of the egg through which the exchange of gases take place. The development stages of the embryo in the  egg is similar to development of embryo in other animals.

​ Hope this information will clear your doubts about the topic. 
For video, kindly refer the study material of chapter no. 9 on our website.
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