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

What is taken away by the mother's blood from the foetus through the placenta?

  1. Oxygen

  2. Water

  3. CO2

  4. Food

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The placenta facilitates bidirectional exchange between maternal and fetal blood. Oxygen and nutrients flow from mother to fetus, while waste products (primarily carbon dioxide) flow from fetus to mother for elimination. Option C is correct - the mother's blood removes CO2 waste from fetal circulation.

Multiple choice

Which of the following structures is responsible for providing nutrients to the growing foetus?

  1. Placenta

  2. Blood capillary

  3. Uterus

  4. Oviduct

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The placenta is the specialized organ that transfers oxygen, nutrients, and antibodies from the mother's blood to the fetus while removing waste products. Option A is correct. Blood capillaries are tiny vessels, the uterus is the muscular organ that houses the fetus, and the oviduct (fallopian tube) is where fertilization occurs, not nutrient transfer.

Multiple choice

Pre-natal sex determination has been prohibited by law due to

  1. high cost charged by doctors

  2. possible danger to mother’s health

  3. increasing cases of female foeticide

  4. increasing cases of male foeticide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

People use pre-natal sex determination techniques to know the sex of their child, whether it’s a male or a female.

Multiple choice

Erythroblastosis fatalis can be prevented if the mother is injected at parturition, with an antibody called ___________.

  1. blocking antibody

  2. Rh (D) immunoglobulins

  3. antilymphocyte globulin

  4. antilymphocyte serum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Erythroblastosis fetalis is an hemolytic disease of the newborn. It classically results from Rh incompatibility when  Rh negative mother carries a foetus,  which is Rh positive. Such Rh positive RBC of foetus when comes in contact with the blood of mother, it stimulates maternal antibody production against Rh antigens. The first pregnancy may be normal, but in subsequent pregnancy, these antibodies lyse foetal RBC causing anaemia and even death. However, maternal sensitization and antibody production can be prevented by injecting mother with Rh (D) immunoglobulin at parturition.

Multiple choice

Which of the following statements is/are true regarding the uterus?

(a) It is a tube like hollow organ. (b) The embryo gets implanted here. (c) The wall of uterus provides nutrition to the foetus. (d) The baby passes from here into the fallopian tube.

  1. a and b

  2. a and d

  3. b and c

  4. c and d

  5. a, b and c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct as both b and c are true. Uterus is a pear-shaped hollow muscular organ, where the embryo gets implanted and develops into a newborn baby. The wall of the uterus provides safety and nutrition to the growing foetus.

Multiple choice

Placental tumor with no embryo development is referred to as

  1. chronic intervillositis

  2. abruptio placenta

  3. vasa previa

  4. placenta percreta

  5. hydatidiform mole
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Placental tumor with no embryo development is known as hydatidiform mole. Several forms of hydatidiform mole: partial mole, complete mole and persistent gestational trophoblastic tumor.

Multiple choice

Intrauterine adhesions, that occur when the basal layer of the endometrium is damaged by instrumentation or infection, are seen in which of the following diseased conditions?

  1. Fibroids

  2. Pyometra

  3. Adenomyosis

  4. Asherman's syndrome

  5. Rokitansky syndrome
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Asherman's syndrome occurs when the basal layer of the endometrium is damaged by instrumentation or infection resulting in endometrial scarring followed by adhesion formation which partially or completely obliterates the uterine cavity.

Multiple choice

A pregnant woman, who has done amniocentesis test, finds an extra barr body in her embryo. The syndrome that is associated with the embryo is

  1. Patau's syndrome

  2. Klinfelter's syndrome

  3. Down's syndrome

  4. Edward syndrome

  5. Turner's syndrome
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Klinefelter syndrome or Klinefelter's syndrome, is the set of symptoms resulting from additional X genetic material in males. This extra barr body is due to presence of extra X chromosome in it.

Multiple choice

A causes miscarriage to B. A is liable for

  1. culpable homicide of the unborn child

  2. murder of unborn child

  3. grievous hurt to B

  4. death by negligence

  5. No offence
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A causes miscarriage to B, which causes B to be in severe pain. Hence, A would be held guilty of causing grievous hurt.