Match the following terms with the correct definition. A single-celled structure

Question

Match the following terms with the correct definition. A single-celled structure formed after fertilization The end of a sperm that contains digestive enzymes A hollow sphere of cells that implants into the endometrium The conceptus from two weeks to eight weeks of development A 16-cell ball that reaches the uterus The fetal membrane that contributes to the placenta The early tissues that will go on to form all tissues in the body The period that extends from the mother's last menstrual period to bi The innermost fetal membrane The conceptus from nine weeks to birth

Explanation / Answer

Only two questions are explained as multiple questions are posted.

A. Ans zygote is the single celled structure formed after fertilization

The zygote is a single-celled structure formed after fusion of male and female gametes(fertilization).

B. Ans The end of a sperm that contains digestive enzymes

Explanation : Acrosome contains digestive enzymes help to penetrate the egg during fertilization. It break down the outer membrane of the ovum which allows the haploid nucleus in the sperm cell to join with the haploid nucleus in the ovum.

C. Ans blastocyst is the hollow sphere of cells that implants into the endometrium

D. Ans morula is the 16 cell ball that reaches the uterus

F. Chorion- The fetal membrane that contributes to the placenta

G. Ans germ layer - early tisseus that go on to form all tissues of body

H. Gestation - The period that extends from the mother’s last menstrual period to birth

I. Amnion - innermost fetal membrane

J. fetus - conceptus from 9 weeks to birth

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