Bihar Board Biology Answer Key 2025 For Class 12th, Download Question Paper with answers

Bihar Board Biology Answer Key 2025: The Bihar Board of Secondary Education has started the Intermediate examination for the Academic year 2024-25 from February 01. As per the schedule, the class 12th Biology examination was conducted on the very first shift from 9:45 to 12: 45 P.M After the conclusion of the exam, all the students who appeared in today’s exam are looking for Bihar Board 12th Biology Answer Key 2025 to cross-check their responses. We shared the BSEB Bihar board Class 12 Biology Questions with Answers on this page.

Bihar Board 12th Biology Answer Key 2025

BSEB is expected to release the BSEB Class 12th Biology Answer key along with other subjects on its official portal after the completion of the all exams. We at Adda247 provide you, the Bihar board 12th biology questions 2025 and answers, for the students who are looking for just after taking it. Along with the answer sheet, we have also provided you the complete analysis of BSEB 12th Biology question paper, it will help you prepare in the upcoming days.

Bihar Board 12th Biology Questions 2025

The First shift of the BSEB 12th Biology exam is end at 12:45 p.m. After the exam, we shares the Bihar Board BSEB Class 12th Biology Question paper with the answer key for all sets hereunder.

1.What is the tendency of endosperm in gymnosperms?
(A) Haploid
(B) Diploid
(C) Triploid
(D) None Of These

Answer: (A) Haploid.

2. Which Of The Following Is a Stress Hormone?
(A) Ethylene
(B) G.A.3
(C) I.A.A.
(D) Abscisic acid

Answer: (D) Abscisic Acid

3. Which of the following is most harmful to the ozone layer?
(A) SO2
(B) CO2
(C) Freon
(D) All of these
Answer:(C) (Freon)

4. Which of the following is related to Kaziranga National Park?
(A) Lion
(B)Tiger
(C) Panther
(D) Rhinoceros

Answer: (D) (Rhinoceros)

5. What is the number of bio-reserves in India?
(A) 10
(B) 18
(C) 23
(D) 41

Answer: (B) 18

6. Which of the following fixes nitrogen?
(A) Anabaena
(B) Ulva
(C) Ulothrix
(D) Spirogyra
Answer: (A) Anabaena

7. By which of the following bonds are the nucleotides of DNA attached?
(A) Hydrogen
(B)Covalent
(C)Electrovalent
(D)All of these

Answer: (B)Covalent

8. Which of the following is an example of analogous organs?
(A)Wings of birds and butterfly
(B)Tail of dog and cat
(C)Wing of bat and hand of man
(D)All of these

Answer: (A) (Wings of birds and butterfly)

9. By which of the following is water hyacinth pollinated ?
(A) Water
(B)Insect
(C)Wind
(D)Both (B) and (C)

Answer: (D) Both (B) and (C)

10. In which of the following are male and female flowers found on the same plant?
(A)Cucumber
(B)Coconut
(C)Brinjal
(D)Tomato

Answer: (A) ( Cucumber)

11. On which of the following planets is there a possibility of life?
(A)Mars
(B) Mercury
(C)Venus
(D) Jupiter

Answer: (A) (Mars)

12. Which of the following is related to pomiculture?
(A)Silk
(B)Fruit
(C)Vegetable
(D)Flower

Answer: (B) (Fruit)

13. Which of the following is a source of quinine ?

(A) Canabis (B) Cinchona (C) Poppy (D) Eucalyptus

Answer: (B) Cinchona

14. Where are woody lianas / climbers found?

(A) Taiga (B) Deciduous forest (C) Tropical rain forest ( D) Shrub (chaparral)

Answer: (C) Tropical Rain Forest

Bihar Board 12th Biology Question Paper 2025 PDF

The Bihar Board 12th Biology Question Paper 2025 PDF is provided below for students’ reference. This question paper will help you comprehend the exam format, scoring system, and key themes. Once the official question paper becomes available, we provides you with the direct download link to get the BSEB Class 12th Question paper pdf.

Bihar Board 12th Biology Question Paper 2025 PDF

BSEB Biology Exam Pattern 2025

Today’s class 12 biology paper pattern is completely based on the model paper shared by the board earlier. The Bihar board 12th biology paper is divided into three sessions.

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