#contraception

ZOOLOGY

Which contraceptive method works by suppressing ovulation and altering rvical mucus consistency?

Oral contraceptive pills contain hormones that suppress ovulation and alter rvical mucus to prevent fertilization. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, ph

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ZOOLOGY

Which of the following contraceptive methods involves the use of chemicals to kill sperms?

Spermicidal creams contain chemicals that kill sperms, thereby preventing fertilization. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Reproduction and Reproductive Health, Topic: Gametogenesis, menstrual cycle and reproductive strategies.

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ZOOLOGY

Which contraceptive method primarily works by preventing sperm from reaching the ovum?

Barrier methods, such as condoms, physically block sperm from entering the female reproductive tract and reaching the ovum. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Reproduction and Reproductive Health, Topic: Gametogenesis, menstrual cycle and reproductive strategies.

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ZOOLOGY

Which type of contraceptive device releases copper ions to prevent fertilization?

Copper-T (Cu-T) is an intrauterine device that releases copper ions to reduce sperm motility and prevent fertilization. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, ph

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ZOOLOGY

Which method of contraception involves the removal of a small part of the vas deferens?

Vasectomy is a permanent male contraceptive method where a small portion of the vas deferens is removed or tied. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

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