Biology

Pregnancy and Childbirth

996 Questions

This hub covers essential biology questions on pregnancy, fetal development, and childbirth. Topics include the placenta, maternal physiology, and the stages of labor. These concepts are frequently tested in general science sections of various competitive examinations.

Placenta and fetal nutritionStages of laborMaternal immune systemPregnancy complications

Pregnancy and Childbirth Questions

Multiple choice

Placenta connects to the fetus by an umbilical cord, which contains _________.

  1. one umbilical artery and one umbilical vein

  2. two umbilical arteries and one umbilical vein

  3. two umbilical arteries and two umbilical veins

  4. one umbilical artery and two umbilical veins

  5. three umbilical veins and one umbilical artery
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Placenta connects to the fetus by an umbilical cord,  which contains two umbilical arteries and one umbilical vein.

Multiple choice

The eyes begin to develop at the end of ______.

  1. 4th week of pregnancy

  2. 8th week of pregnancy

  3. 12th week of pregnancy

  4. 24th week of pregnancy

  5. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The eye begins to develop as a pair of optic vesicles on each side of the forebrain at the end of the 4th week of pregnancy.

Multiple choice

Which of the following factors is/are responsible for increase in the likelihood of dizygotic twin pregnancies in woman? (i) She is of West African descent (especially Yoruba). (ii) She is between the age of 30 and 40 years. (iii) She is greater than average height and weight. (iv) She has had several previous pregnancies.

  1. She is of West African descent

  2. She is between the age of 30 and 40 years

  3. She is greater than average height and weight

  4. She has had several previous pregnancies.

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yes, it is correct.

Multiple choice

Mental retardation caused by birth injuries or fetal damage is called __________ retardation.

  1. organic

  2. familial

  3. incidental

  4. medical
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Organic mental retardation results from physical brain damage or disruption, whether from birth injuries, fetal damage, infections, or other biological causes. This distinguishes it from familial retardation, which has genetic or environmental causes without specific physical damage to brain tissue.

Multiple choice

A chorion is

  1. a bag like structure within a pregnant woman's uterus containing the amniotic fluid that surrounds a fetus

  2. a membrane that originates around an embryo and contributes to the formation of the placenta

  3. a bag like structure in the uterus that is connected to a fetus by the umbilical cord

  4. another term used for umblical cord
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The chorion develops around the embryo early in a pregnancy. Later, as a fetus develops from the embryo, the chorion fuses with the amnion.

Multiple choice

Which placenta is found in guinea pigs and rats?

  1. Endotheliochorial placentation

  2. Epitheliochorial placentation

  3. Hemochorial placentation

  4. Monochorionic placentation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This type of placenta is found in humans beings, guinea pigs, rabbits, mice and rats.

Multiple choice

Which of the following is correct about a test tube baby?

  1. Fertilisation inside the female genital tract and growth in a test tube

  2. Rearing the prematurely born baby in an incubator

  3. Fertilisation outside and gestation inside the womb of a mother

  4. Both fertilisation and development affected outside the female genital tract
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A test tube baby is fertilised outside the body, but grows in a mother's womb.

Multiple choice

In which of the following can erythroblastosis foetalis occur?

  1. Man Rh+ and Woman Rh+

  2. Man Rh- and Woman Rh-

  3. Man Rh+ and Woman Rh-

  4. Man Rh- and Woman Rh+
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Erythroblastosis foetalis are the conditions where newborn infants suffer from anaemia, jaundice, enlarged spleen or liver and in severe cases, stillbirth or death soon after birth.

Multiple choice

Which of the following diseases in the newborn is not a indication of maternal IgG antibody, crossing the placenta?

  1. Myaesthenia gravis

  2. Malar rash

  3. HIV infection

  4. Thyrotoxicosis

  5. Haemolytic disease of the newborn (rhesus)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

HIV infection is due to transmission of the HIV virus, not the antibody. However, the presence of maternal anti-HIV IgG can lead to diagnostic difficulty. It is therefore, necessary to confirm HIV infection in the newborn by the presence of viral DNA or RNA, using a polymerase chain reaction (PCR) method.