The placenta is an organ that connects the umbilical cord of the uterus to the maternal tissue. It is a connecting link between the developing foetus and the mother. The placenta maintains the nutrient level by providing the blood supply to the foetus, eliminates the waste products and maintains the thermoregulation. The hormone hCG (human chorionic gonadotrophin) is secreted exclusively from the placenta. The detection of this hormone in the urine confirms the pregnancy.

Match the following columns and select the correct option:- Column-I Column-II (a) Ovary (i) Human chorionic gonadotropin (b) Placenta (ii) Estrogen & Progesterone (c) Corpus luteum (iii) Androgens (d) Leydig cells (iv) Progesterone only

( a ) - ( ii ) , ( b ) - ( i ) , ( c ) - ( iv ) , ( d ) - ( iii )

( a ) - ( iv ) , ( b ) - ( iii ) , ( c ) - ( ii ) , ( d ) - ( i )

( a ) - ( i ) , ( b ) - ( ii ) , ( c ) - ( iii ) , ( d ) - ( iv )

( a ) - ( i ) , ( b ) - ( iii ) , ( c ) - ( ii ) , ( d ) - ( iv )

Match the months listed in Column - I write the organogenesis of foetus in Column - II. Column - I Column - II (i) First month (a) Separation of eye lids (ii) Second month (b) Hairs on head (iii) Fifth month (c) Heart (iv) Six month (d) limbs and Digits

( i ) - ( c ) , ( ii ) - ( d ) , ( iii ) - ( b ) , ( iv ) - ( a )

( i ) - ( c ) , ( ii ) - ( d ) , ( iii ) - ( a ) , ( iv ) - ( b )

( i ) - ( b ) , ( ii ) - ( c ) , ( iii ) - ( d ) , ( iv ) - ( a )

( i ) - ( d ) , ( ii ) - ( b ) , ( iii ) - ( c ) , ( iv ) - ( a )

EASY

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First movement of foetus and appearance of hair on the head of the foetus is usually observed during which month of pregnancy?

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Important Questions on Human Reproduction

HARD

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

The following question has four choices. Choose the best option.
Eyelids in human foetus separate in:

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Which ONE of the following statements is CORRECT about placenta?

HARD

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

List the three hormones produced in women only during pregnancy. What happens to the levels of oestrogen and progesterone during pregnancy?

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Name any one hormone released by placenta during pregnancy.

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Assertion (A): Generally, a woman does not conceive during the lactation period

Reason (R): The hormone 'Prolactin' initiates and maintains lactation in a delivered woman

HARD

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Write differences between Parturition and Lactation.

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Medically it is advised to all young mothers that breastfeeding is the best for their newborn babies. Do you agree? Give reasons in support of your answer.

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Describe pregnancy and embryonic development.

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Several hormones like hCG, hPL, estrogen, progesterone are produced by

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Placenta of human being is

(I)	Yolk sac placenta
(II)	Chorioallantoic placenta
(III)	Zonary placenta
(IV)	Discoidal placenta
(V)	Haemochorial placenta
(VI)	Indeciduate placenta
(VII)	Deciduate placenta

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Describe the formation of milk.

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Which of these is not an important component of initiation of parturition in humans?

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Explain the culmination of pregnancy in humans.

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Describe the formation of the placenta during the pregnancy.

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

The structure which provides a vascular connection between foetus and uterus is called as

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What is Placenta?

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What are gestation and parturition?

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Match the following columns and select the correct option:-

Column-I		Column-II
(a)	Ovary	(i)	Human chorionic gonadotropin
(b)	Placenta	(ii)	Estrogen & Progesterone
(c)	Corpus luteum	(iii)	Androgens
(d)	Leydig cells	(iv)	Progesterone only

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Assertion (A): During the formation of placenta, some layers of uterus are eroded and during parturition, extensive haemorrhage occurs
Reason (R): Placenta of man is described as haemo endothelial placenta

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Match the months listed in Column - I write the organogenesis of foetus in Column - II.

	Column - I		Column - II
(i)	First month	(a)	Separation of eye lids
(ii)	Second month	(b)	Hairs on head
(iii)	Fifth month	(c)	Heart
(iv)	Six month	(d)	limbs and Digits

First movement of foetus and appearance of hair on the head of the foetus is usually observed during which month of pregnancy?

Important Questions on Human Reproduction

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