CBSE Questions for Class 12 Medical Biology Reproductive Health Quiz 1 - MCQExams.com

• Artificial insemination is the manual introduction of sperm into a female's uterine cavity for the initiating a pregnancy by in vivo fertilization avoiding sexual intercourse.
  
• It requires lesser sperms and is carried out selectively.
  

• Infertility is the inability of a couple to become pregnant (regardless of cause) after 1 year of unprotected sexual intercourse (using no birth control methods).
• Reasons for infertility include physical stress, congenital issues, drugs, immunological issues and sometimes even psychological issues.
• Sterility refers to the inability to produce a child permanently.
• Infertility can be resolved by medication or treatment.
• So the correct answer is "Infertility is not always a biological issue."

• Male infertility is usually caused by problems that affect either sperm production or sperm transport. 
• Low sperm motility, abnormal sperm structure, less sperm count are considered as infertility issues in males.
• So the answer is 'All of the above'.

• Medical Termination of Pregnancy (MTP) is the process of termination of pregnancy voluntarily before the full term of pregnancy is completed. It is also known as induced abortion. 
• MTP is considered relatively safe during the first trimester, i.e., up to 12 weeks of pregnancy. 
  

$$\textbf{Correct answer: C}$$ 

$$\textbf{Option (A):}$$ 

$$\bullet$$ Cyanobacteria is the blue-green algae that do not affect pregnant women and it does not cause abortion in those ladies.

$$\textbf{Option (B):}$$ 

$$\bullet$$ Not all forms of bacteria are responsible for causing an abortion in pregnant women.

$$\bullet$$ Some of the bacteria may affect the foetus while some of them only affect the mother and do not reach the foetus.

$$\textbf{Option (C):}$$ 

$$\bullet$$ If a pregnant mother suffers from a mycoplasma infection, it affects the placenta by blocking the passage of blood and food from the mother to the embryo.

$$\bullet$$ Due to their inability to get enough nutrients, the embryo fails to develop leading to abortion.

Hence, the correct answer is option (C).