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Biology MCQ, Class-11th, Chapter-5, Morphology of Flowering Plants
NCERT Based MCQ with Explanation:
1. What does reproductive health mean as per WHO?
(a) Physical well-being only
(b) Emotional stability during reproduction
(c) Complete well-being in all aspects of reproduction
(d) Absence of diseases related to reproduction
Explanation: WHO defines reproductive health as total well-being, encompassing physical, emotional, behavioral, and social aspects.
2. When did India launch its first family planning program?
(a) 1947
(b) 1951
(c) 1965
(d) 1972
Explanation: India initiated its family planning program in 1951, making it one of the first countries to take such action.
3. What is the primary objective of the Reproductive and Child Health Care (RCH) program?
(a) To enforce strict population control
(b) To create awareness and provide facilities for reproductive health
(c) To legalize all pregnancies
(d) To introduce new contraceptives
Explanation: RCH aims to educate people about reproductive health and provide necessary facilities for its maintenance.
4. Which method is most effective in preventing STDs and AIDS?
(a) Oral contraceptives
(b) Barrier methods
(c) Natural methods
(d) Surgical methods
Explanation: Barrier methods, such as condoms, are highly effective in preventing the transmission of sexually transmitted diseases (STDs) and HIV/AIDS.
5. What is the main advantage of introducing sex education in schools?
(a) To promote contraceptive use
(b) To provide proper information and dispel myths
(c) To encourage early marriages
(d) To improve physical fitness
Explanation: Sex education helps young individuals gain correct knowledge about reproductive health and avoid misconceptions about sex-related matters.
6. What is the purpose of contraceptive pills?
(a) To enhance ovulation
(b) To inhibit ovulation and prevent fertilization
(c) To encourage implantation
(d) To stimulate menstruation
Explanation: Contraceptive pills contain hormones that inhibit ovulation, prevent implantation, and alter cervical mucus to block sperm entry.
7. Which contraceptive method involves the surgical removal of a part of the fallopian tube?
(a) Vasectomy
(b) Tubectomy
(c) Copper T insertion
(d) Lactational amenorrhea
Explanation: Tubectomy involves cutting or tying the fallopian tubes to prevent the transport of ova, effectively sterilizing the female.
8. What is the role of Copper T in contraception?
(a) Stimulates ovulation
(b) Increases sperm motility
(c) Prevents implantation of the embryo
(d) Enhances fertilization
Explanation: Copper T is an intrauterine device (IUD) that releases copper ions, which suppress sperm motility and prevent implantation.
9. What is the legal duration for safe medical termination of pregnancy (MTP) in India during the first trimester?
(a) 6 weeks
(b) 8 weeks
(c) 12 weeks
(d) 16 weeks
Explanation: Medical Termination of Pregnancy is considered safer and legal within the first 12 weeks under medical supervision in India.
10. Which condition is characterized by the absence of ovulation during intense breastfeeding?
(a) Tubectomy
(b) Lactational amenorrhea
(c) Periodic abstinence
(d) Coitus interruptus
Explanation: Lactational amenorrhea occurs during breastfeeding when hormonal changes prevent ovulation, serving as a natural contraceptive.
11. What is the primary cause of population explosion in India?
(a) High infant mortality rate
(b) Increased maternal mortality rate
(c) Decline in death rates and improved health facilities
(d) Reduced number of reproductive couples
Explanation: Improved health care and decreased mortality rates have led to rapid population growth in India.
12. Which contraceptive method involves abstaining from intercourse during the fertile period?
(a) Coitus interruptus
(b) Periodic abstinence
(c) Tubectomy
(d) Vasectomy
Explanation: Periodic abstinence involves avoiding intercourse during the ovulation period to prevent fertilization naturally.
13. Which sexually transmitted infection (STI) is caused by a virus?
(a) Gonorrhea
(b) Syphilis
(c) Genital herpes
(d) Chlamydiasis
Explanation: Genital herpes is caused by the herpes simplex virus and is a common viral STI.
14. What is the term for fertilization that occurs outside the body?
(a) Artificial insemination
(b) Zygote intra-fallopian transfer
(c) In vitro fertilization
(d) Gamete intra-fallopian transfer
Explanation: In vitro fertilization (IVF) involves fertilizing an ovum outside the body and transferring the embryo into the uterus.
15. What is the term for the surgical method of contraception in males?
(a) Tubectomy
(b) Vasectomy
(c) Barrier method
(d) Implantation
Explanation: Vasectomy involves cutting or tying the vas deferens, preventing sperm transport and acting as a permanent contraceptive.
Science MCQ, Class 10th, Chapter-7, How Do Organisms Reproduce?16. What is "Saheli"?
(a) A barrier contraceptive
(b) A hormone-releasing IUD
(c) A non-steroidal oral contraceptive
(d) An injectable contraceptive
Explanation: Saheli is a weekly oral contraceptive pill developed in India, with minimal side effects and high contraceptive value.
17. Which contraceptive method is considered most effective in emergency situations?
(a) Oral pills
(b) Emergency contraceptive pills
(c) IUDs
(d) Natural methods
Explanation: Emergency contraceptive pills prevent implantation and are highly effective when taken within 72 hours of unprotected intercourse.
18. What is the significant risk associated with the misuse of amniocentesis?
(a) Increase in male births
(b) Female foeticide
(c) Miscarriage in males
(d) Genetic abnormalities in children
Explanation: Amniocentesis is often misused for sex determination, leading to illegal and unethical female foeticide.
19. What is the most common age group affected by STIs?
(a) Below 10 years
(b) 15–24 years
(c) 25–40 years
(d) Above 40 years
Explanation: Individuals aged 15–24 years are more vulnerable to STIs due to their lack of awareness and high-risk behavior.
20. What is the primary symptom of infertility?
(a) Frequent miscarriages
(b) Inability to conceive after unprotected intercourse
(c) Abnormal menstrual cycles
(d) Hormonal imbalances
Explanation: Infertility is defined as the inability to conceive even after two years of unprotected intercourse.
21. Which contraceptive method is most effective in reducing the risk of sexually transmitted infections?
(a) Oral contraceptives
(b) Condoms
(c) IUDs
(d) Coitus interruptus
22. What is the major aim of the RCH program in India?
(a) Reducing contraceptive use
(b) Providing comprehensive reproductive health care
(c) Increasing birth rates
(d) Promoting large families
23. What does the term "zygote intra-fallopian transfer" (ZIFT) refer to?
(a) Transfer of gametes into the fallopian tube
(b) Transfer of zygotes into the fallopian tube
(c) Transfer of embryos into the uterus
(d) Transfer of sperm into the uterus
24. What is a common symptom of early-stage sexually transmitted infections (STIs)?
(a) Severe abdominal pain
(b) Visible tumors
(c) Genital itching and discharge
(d) Loss of hair
25. What is the legal age of marriage for males in India?
(a) 16 years
(b) 18 years
(c) 21 years
(d) 25 years
26. Which method of contraception is a terminal procedure?
(a) IUD insertion
(b) Sterilization
(c) Oral pills
(d) Barrier methods
27. What is the primary goal of population stabilization?
(a) Increasing fertility rates
(b) Balancing resource distribution
(c) Preventing population decline
(d) Achieving a stable growth rate
28. What does "lactational amenorrhea" depend on?
(a) Lack of fertilization
(b) Hormonal changes during breastfeeding
(c) Use of oral contraceptives
(d) Postpartum depression
29. What is the purpose of sex education in schools?
(a) To promote early marriages
(b) To dispel myths and provide accurate information
(c) To teach contraceptive methods only
(d) To reduce hormonal changes during adolescence
30. Which STI is caused by bacteria?
(a) Hepatitis B
(b) HIV
(c) Gonorrhea
(d) Genital herpes
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