Class 12 Biology Chapter 4 Reproductive Health | Important Board Questions | 2026 Exam

Class 12 Biology Chapter 4 – Reproductive Health (Part-6) with important long-answer questions asked frequently in CBSE Board Exams & NEET. All answers are explained in simple language, perfect for 2026 board exam preparation. Q1. Describe the causes, symptoms and prevention of any three STDs? Ans. Sexually Transmitted Diseases (STDs) are infections transmitted through sexual contact. 1. AIDS (Acquired Immuno Deficiency Syndrome) Cause: HIV (Human Immunodeficiency Virus) Symptoms: Weak immunity, weight loss, fever, recurrent infections Prevention: Safe sex, screened blood transfusion, sterile needles 2. Syphilis Cause: Bacterium Treponema pallidum Symptoms: Painless sores, skin rashes, fever Prevention: Early diagnosis, monogamy, condom use 3. Gonorrhoea Cause: Neisseria gonorrhoeae Symptoms: Painful urination, pus discharge Prevention: Proper hygiene, safe sex, timely treatment Q2. Explain the process and advantages of amniocentesis. Why is its misuse harmful? Ans. Amniocentesis is a prenatal diagnostic technique used to detect genetic disorders. Process: A small amount of amniotic fluid is withdrawn from the uterus. Fetal cells present in the fluid are cultured and examined. Advantages: Detects genetic disorders like Down syndrome Helps in early treatment planning Ensures healthy child development Misuse & Harm: Used for sex determination Leads to female foeticide Causes disturbed sex ratio Illegal and punishable by law in India Q3. Write a note on population explosion and steps to control it? Ans. Population explosion refers to rapid increase in human population. Causes: Reduced death rate Improved medical facilities Lack of awareness Problems: Unemployment Poverty Scarcity of resources Environmental pollution Control Measures: Family planning Late marriage Use of contraceptives Awareness programs Education of women Q4. Discuss the importance of reproductive health in society? Ans. Reproductive health ensures physical, emotional, and social well-being. Importance: Prevents STDs Reduces maternal & infant mortality Controls population growth Promotes family welfare Creates social awareness Improves quality of life 📚 These questions are very important for CBSE Board Exams 2026, NEET, and CUET. 👉 Watch till the end to score 90+ marks in Biology! 👉 Like 👍 Share 📤 and Subscribe 🔔 LearnXSci for more exam-oriented content.