CBSE 2025 · Region 4 · Set 2 · Q21 · 2 marks
Write two features of an ideal contraceptive. Explain any one natural contraceptive method that makes the chances of conception almost nil.Explain GIFT and ICSI.
Write two features of an ideal contraceptive. Explain any one natural contraceptive method that makes the chances of conception almost nil.
Explain GIFT and ICSI.
Marking-scheme solution
(a)
• User-friendly,
easily
available,
effective,
reversible, no or least side effects, should not interfere with the sexual drive or desire and/or the sexual act of the user, any other correct feature.
•
− Periodic abstinence, couples avoid or abstain from coitus from day $\displaystyle 10$ to $\displaystyle 17$ of the menstrual cycle.
− Withdrawal or coitus interruptus, the male partner withdraws his penis from the vagina just before ejaculation.
− Lactational amenorrhea, after parturition when mother breast feeds the child intensely ovulation does not occur thus menstrual cycle also not occurs.
or
(b)
• GIFT : Transfer of an ovum collected from a donor into
the fallopian tube of another suitable female.
• ICSI: Sperm is directly injected into the ovum in vitro
to form an embryo
Reproductive HealthPopulation Stabilisation and Birth ControlUnderstandvery_short_answermedium
More from Reproductive Health
- Assertion: The laws of our country permit legal adoption and it is as yet, one of the best methods for…2024 · asked 3×
- Expand and explain the following techniques used in the 'Test Tube Baby' programme: GIFT ZIFT IUI2023 · asked 3×
- Observe the schematic representation of assisted reproductive technology given below: Identify the most…2024 · asked 3×
- Explain the mode of action of contraceptive pills taken by human females. Mention the schedule to be followed…2024 · asked 3×
- The periodic abstinence by a couple for family planning should be from:2024 · asked 3×
- In vitro fertilization (IVF) is a popular method these days that is helping childless couples to bear a…2026 · asked 3×
- Study the table given below: Select the option where contraceptive/contraceptive method are correctly matched…2024 · asked 3×
- Explain what is meant by the term amniocentesis. How is this technique misused in India? OR Name any two VDs…2025 · asked 3×
CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.