CAIE IGCSE Biology 16.4.7 In Early Development the Zygote Forms Questions

Practise explaining how mitotic divisions form an embryo that implants into the lining of the uterus.

Exam points

state that fertilisation produces a diploid zygote
explain that repeated mitosis forms a ball of genetically identical cells
locate implantation in the lining of the uterus after the embryo reaches it

[Maximum number: 3]

Pregnancy can occur after the fusion of a male gamete and a female gamete.

(a)

State the name of the ball of cells that implants into the uterus after fertilisation.

[ 1 ]

(b)

There are many changes that occur in a fetus during pregnancy.

Compare the development of a fetus in the early stages of pregnancy to its development in the late stages of pregnancy.

[ 2 ]

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CAIE IGCSE Biology 16.4.7 In Early Development the Zygote Forms Questions question 1

Question (a)

Question (b)