Biology 12 Chapter - 20 Reproduction - 21

Biology 12 Chapter - 20
Reproduction - 21

1. At which cell stage the embryo is implanted back into womb?

a) 2-4 cell stage
b) 2-6 cell stage
c) 2-8 cell stage
d) 2-10 cell stage

2. Which hormone is provided to the female after embryo implantation in in vitro fertilization?

a) Androgen

b) Progesterone

c) Estrogen
d) LH

3. Miscarriage is the act of giving birth to a foetus usually before…………….week of pregnancy?

a) 24th

b) 26th

c) 30th

d) 28th

4. Which does NOT define miscarriage?

a) Natural abortion
b) Spontaneous abortion

c) All of these
d) Induced abortion

5. Which is the characteristic of Abortions?

a) All of these
b) Induced termination of pregnancy

c) Natural termination of pregnancy
d) Spontaneous termination of pregnancy

6. The implantation of embryo near………….cause miscarriage?

a) Uterus

b) Cervix

c) Vagina
d) Oviduct

7. What does happen in case of miscarriage?

a) Haemorrhage due to tear away of placenta

b) All of the above
c) Menstruation due to tear away of endometrium
d) Haemorrhage due to tear away of endometrium

8. The live birth which takes place before EDD is called……….?

a) Spontaneous abortion
b) Pre mature birth

c) Natural abortion

d) Miscarriage

9. STDs are………….. diseases?

a) Epidemic

b) Congenital
c) Endemic
d) Contagious

10. What is the common cause of all STDs?a) Feeding by mother

b) Sexual contact

c) Blood contact
d) All of the above

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