12th Class Biology Quiz Ranking Competition

Announcing the 12th Class Biology Quiz Ranking Competition of 2025. Participate every month and become chance to #IAmRanker of your subjects.

Delve deep into the captivating world of biology! The 12th Class Biology Quiz Ranking Competition of 2024 is calling all bio-enthusiasts to challenge and expand their biological acumen. Participate without any fees and engage with budding biologists from around the globe.

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Time: 30 Minutes for 20 Question.

Class 12th Biology Quiz Contest [May 2025]

The number of attempts remaining is 1

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1. Cleistogamous flowers are

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2. From among the situations given below, choose the one that prevents both autogamy and geitonogamy

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3. Correct sequence in development is

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4. Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as

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5. Choose the correct statement from the following.

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6. Sugarcane is propagated by

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7. In the human female, menstruation can be deferred by the administration of

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8. The ‘X’ body of Henking was observed in

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9. The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?

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10. Fertilization involving carrying of male gametes by pollen tube is

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11. Probability of four sons to a couple is

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12. The cell which undergoes meiosis I during spermatogenesis, is the

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13. Which of the following pair has haploid structures?

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14. The test cross is used to determine the

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15. Identify the odd one from the following

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16. After birth, colostrum is released from mammary glands which is rich in

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17. Which one of the following is not a male accessory gland?

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18. The term clone is used to describe such ___________and ________ similar individual.

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19. Two dominant non-allelic genes are 50 map units apart. The linkage is

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20. First or free milk is called

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Pankaj Karn

I’m a dedicated biology teacher specializing in online education and academic writing. Currently, I contribute to QuizRanker.in, where I create engaging and informative biology content. With an MSc degree in hand, I’m passionate about making complex biological concepts accessible and exciting for students everywhere.