Given below are four methods (A-D) and their modes of action (i) - (iv) in achieving contraception. Select their correct matching from the four options which follow.
Population-Explosion-and-Birth-Control-Multiple-Choice-Questions-for-CBSE-Class-12-Biology-Topperlearning-300x197.png
  • A-(iii), B-(i), C-(iv), D-(ii)
  • A-(iv), B-(i), C-(ii), D-(iii)
  • A-(ii), B-(iii), C-(i), D-(iv)
  • A-(iii), B-(iv), C-(i), D-(ii)
The percentage ratio of natality over mortality is called
  • Vital index
  • Total count
  • Population density
  • None of the above
Which period of the menstrual cycle is called the risky period of conception?
  • 7th to 13th day
  • 15th to 25th day
  • 10th to 17th day
  • 3rd to 7th day
Amniocentesis is a process to
  • Determine any hereditary disease of the embryo
  • Know about the disease of the brain
  • Grow cells on a culture medium
  • Determine any disease of the heart
Diaphragms are contraceptive devices used by females. Choose the correct option from the statements given below: (i) They are introduced into the uterus. (ii) They are placed to cover the cervical region. (ii) They act as physical barriers for sperm entry. (iv) They act as spermicidal agents.
  • (iii) and (iv)
  • (i) and (ii)
  • (i) and (iii)
  • (ii) and (iii)
Which of the following birth control measures can be considered as the safest?
  • Termination of unwanted pregnancy
  • The use of physical barriers
  • Sterilisation techniques
  • The rhythm method
Which one of the following is the most widely accepted method of contraception in India at present?
  • Tubectomy
  • Cervical caps
  • Diaphragms
  • IUDs (Intrauterine devices)
One of the legal methods of birth control is
  • By abstaining from coitus from day 10 to 17 of the menstrual cycle
  • By premature ejaculation during coitus
  • By having coitus at the time of daybreak
  • Abortion by taking an appropriate medicine
Induced abortion is also called
  • MTP
  • PID
  • SID
  • IUD
The human population follows
  • J-shaped growth curve
  • S-shaped growth curve
  • Z-shaped growth curve
  • All of the above
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