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Bihar Board 12th Question Paper 2024 PDF with Answers
The Bihar School Examination Board has started the BSEB Intermediate exams for the academic session 2023-24. As per the schedule, the Class 12th Biology exam is administered during the first shift, from 9:30 a.m. to 12:15 p.m. The official Bihar Board 12th Biology Answer Key 2024 will be released along with all subjects in March by BSEB. we share the unofficial Bihar Board 12th Biology Answer Key 2024 and Bihar Board 12th Question Paper 2024 pdf with answers on this page.
Bihar Board 12th Biology Answer Key 2024
Bihar Board 12th Biology Answer Key 2024 provides you the the correct answers with specific question marking which helps students to predict their score on the Biology Exam. Students who took the Class 12 Biology Exam are eagerly looking for the Bihar Board 12th Biology Answer Key 2024 for their shifts. To make it easier for students, we have released the Bihar Board 12th Biology Answer Key 2024 of Sets A to J. Instead of visiting many websites, stay with us and compare responses to the Bihar Board Class 12 Biology Answer Key 2023 provided on this page.
Bihar Board Class 12 Biology Question Paper 2024 : Pattern
It is crucial to know the marks distribution while analyzing the Bihar Board 12th Biology Answer Key 2024. The 12th Biology test will be worth 70 points, with 30 of those points being practical. There will be a 70-mark theory exam with 50% objective questions and 50% short and long answer questions.
In subjective type questions, there will be 20 questions of 2 marks each, which you will have to answer just 10 questions, and 6 questions of 5 marks, which you will have to answer. Only three questions have to be answered. Check out the Overview of the Bihar Board 12th Biology Question Paper 2024.
Bihar Board Class 12 Biology Answer Key 2024 | |
Examination Name | Bihar Board Class 12 Biology Exam 2024 |
Exam conducting Body | Bihar school examination board |
Category | Answer Key |
Unofficial Bihar Board 12th Biology Answer Key 2024 | Out |
official Bihar Board Class 12 Biology Answer Key 2024 | March 2024 |
Class 12 Biology Total Marks | 100 Marks
|
Negative Marking | No |
Marking Scheme |
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Bihar Board 12th Biology Question Paper 2024 pdf with answers -All Sets
The Bihar board 12th Question paper 2024 pdf with answers is free of errors and has been prepared by Adda247’s qualified faculty. After the exam, you can download all of the question paper answers for the Bihar Board Class 12th Biology Exam 2024, from Set A to Set J, The Bihar Board Class 12th Biology Answer Key 2024 for All Sets will be shared shortly.
Set Code | Bihar Board Class 12th Biology Answer Key 2024 |
Set (A) | Available soon |
Set (B) | Download PDF |
Set (C) | Available soon |
Set (D) | Available soon |
Set (E) | Available soon |
Set (F) | Download PDF |
Set (G) | Download PDF |
Set (H) | Available soon |
Set (I) | Available soon |
Set (J) | Available soon |
Bihar Board Class 12th Time Table 2024
Bihar Board Biology Question Paper 2024
To predict their score, Candidates can check out the Bihar Board Biology Question Paper 2024 given below.
Bihar Board 12th Biology Question Paper 2024 with Answers
The Actual Bihar board biology question paper 2024 includes both Objective type and subjective type questions which are divided into two sections- Section A and Section B. The Total mark of the Class 12 Biology question Paper is 70 Maks is divided into 3 sections: 35 Mraks for MCQs(35Χ1marks), 20 marks for Short Type Answers (10Χ2marks), and the remaining 15 marks allotted for three Long Answer Type Questions (3Χ5marks). Candidates have a total of 3 Hours 15 minutes to complete the whole bihar board biology question paper 2024.
Section A
Q. Which of the following reproduces once in a lifetime?
BSEB 12th Biology Question Paper 2024 with Answer key
1. What is the meaning of charging of t-RNA?
(A) Linking of amino acid with cognate t-RNA
(B) Attachment of t-RNA with ribosome
(C) Translation of RNA
(D) Modification of RNA
Answer: (B) Attachment of t-RNA with ribosome
2. Which of the following is not a termination codon?
(A) UAG
(B) UGA
(C) AUG
(D) UAA
Answer: (C) AUG
3. Which of the following blood cells is known as PMNL?
(A) Lymphocyte
(B) Monocyte
(C) Neutrophil
(D) Platelets
Answer: (C) Neutrophil
4. Which of the following is abundantly found in colostrum?
(A) IgA
(B) IgG
(C) IgM
(D) IgD
Answer: (A) IgA
5. Which of the following is a non-infectious disease?
(A) AIDS
(B) Malaria
(C) Cancer
(D) Typhoid
Answer: (C) Cancer
Answers to the remaining exam questions will be updated shortly.
BSEB Class 12th Biology Answer Key 2024 Set B
Bihar Board 12th Biology Answer Key 2024 for Set B is given below.
Bihar Board 12th Biology Answer Key 2024 for Set B | |||
Question Number | Correct Answer | Question Number | Correct Answer |
1 | C | 36 | A |
2 | A | 37 | C |
3 | NA | 38 | B |
4 | NA | 39 | D |
5 | NA | 40 | C |
6 | B | 41 | C |
7 | B | 42 | A |
8 | C | 43 | D |
9 | D | 44 | B |
10 | D | 45 | B |
11 | B | 46 | B |
12 | D | 47 | C |
13 | A | 48 | B |
14 | B | 49 | A |
15 | D | 50 | B |
16 | D | 51 | C |
17 | D | 52 | A |
18 | C | 53 | C |
19 | B | 54 | C |
20 | B | 55 | C |
21 | B | 56 | B |
22 | C | 57 | D |
23 | B | 58 | B |
24 | B | 59 | A |
25 | A | 60 | B |
26 | B | 61 | B |
27 | B | 62 | D |
28 | C | 63 | D |
29 | D | 64 | A |
30 | A | 65 | C |
31 | A | 66 | D |
32 | D | 67 | C |
33 | B | 68 | C |
34 | C | 69 | A |
35 | B | 70 | A |
Bihar Board Answer Key Biology 2024 Set G
Bihar Board 12th Biology Answer Key 2024 for Set G is given below.
Bihar Board 12th Biology Answer Key 2024 Set G |
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Question Number | Correct Answer | Question Number | Correct Answer |
1 | D | 36 | D |
2 | B | 37 | A |
3 | A | 38 | A |
4 | B | 39 | D |
5 | B | 40 | C |
6 | D | 41 | C |
7 | D | 42 | B |
8 | C | 43 | A |
9 | A | 44 | C |
10 | C | 45 | B |
11 | C | 46 | C |
12 | A | 47 | C |
13 | B | 48 | A |
14 | B | 49 | A |
15 | C | 50 | C |
16 | B | 51 | D |
17 | B | 52 | D |
18 | A | 53 | C |
19 | C | 54 | A |
20 | B | 55 | B |
21 | A | 56 | B |
22 | A | 57 | A |
23 | C | 58 | C |
24 | B | 59 | A |
25 | D | 60 | C |
26 | C | 61 | C |
27 | C | 62 | C |
28 | A | 63 | B |
29 | C | 64 | C |
30 | B | 65 | A |
31 | B | 66 | A |
32 | B | 67 | A |
33 | D | 68 | B |
34 | D | 69 | B |
35 | A | 70 | C |
Bihar Board Class 12th Biology Answer Key 2024 Set F
Bihar Board 12th Biology Answer Key 2024 for Set F is given below.
Bihar Board 12th Biology Answer Key 2024 Set F |
|||
Question Number | Correct Answer | Question Number | Correct Answer |
1 | A | 36 | A |
2 | C | 37 | C |
3 | B | 38 | D |
4 | D | 39 | C |
5 | C | 40 | C |
6 | C | 41 | A |
7 | A | 42 | A |
8 | D | 43 | D |
9 | B | 44 | NA |
10 | B | 45 | A |
11 | B | 46 | D |
12 | B | 47 | C |
13 | D | 48 | C |
14 | D | 49 | B |
15 | D | 50 | C |
16 | A | 51 | B |
17 | A | 52 | B |
18 | A | 53 | B |
19 | B | 54 | D |
20 | B | 55 | A |
21 | C | 56 | A |
22 | C | 57 | C |
23 | D | 58 | A |
24 | D | 59 | C |
25 | C | 60 | C |
26 | A | 61 | A |
27 | B | 62 | B |
28 | B | 63 | B |
29 | C | 64 | A |
30 | B | 65 | C |
31 | D | 66 | A |
32 | B | 67 | C |
33 | C | 68 | C |
34 | B | 69 | C |
35 | A | 70 | B |
Bihar Board 12th Biology Important MCQs with Answers
Instructions: The following Questions have four options, out of which only one is correct. Answer the following Questions-
1. According to IUCN, how many animal and plant species occur on earth ?
(A) Slightly more than 1.5 million (B) 7 million
(C) 20-25 million (D) 3 million
Answer: (A) Slightly more than 1.5 million
2. Who propounded Competitive Exclusion Principle ?
(A) Mac Arthur (B) Gause
(C) Connell (D) Darwin
Answer: (B) Gause
3. Organisms that can tolerate a variable wide range of temperatures are called as –
(A) Eurythermal (B) Stenothermal
(C) Cold blooded (D) Warm blooded
Answer: (A) Eurythermal
4. The name of M. S. Swaminathan is associated with which of the following fields ?
(A) Ecology (B) Biotechnology
(C) Green revolution (D) Milk production
Answer: (C) Green revolution
5. Golden rice is rich in which of the following ?
(A) Vitamin B1 (B) Vitamin B2
(C) Vitamin C (D) Vitamin A
Answer: (D) Vitamin A
6. Which of the following micro-organisms is utilized to prepare “SwissCheese” ?
(A) Penicillium roqueforti (B) Propionibacterium sharmanii
(C) Yeast (D) Lactic acid bacteria
Answer: (B) Propionibacterium sharmanii
7. In which of the following plants adventitious buds develop from leaves?
(A) Ginger (B) Banana
(C) Dahlia (D) Bryophyllum
Answer: (D) Bryophyllum
8. Sporozoite is the infective stage of which of the following diseases ?
(A) Malaria (B) Typhoid
(C) AIDS (D) Pneumonia
Answer: (A) Malaria
9. In which of the following XO – Male type of sex determination is observed ?
(A) Grasshopper (B) Honey bee
(C) Human (D) Birds
Answer: (A) Grasshopper
10. In which of the following organism meiosis does not occur during gamete formation ?
(A) Haploid organism (B) Diploid organism
(C) Human (D) Chimpanzee
Answer: (B) Diploid organism
11. Who propounded Central Dogma ?
(A) Watson (B) Crick
(C) Wilkins (D) R. Franklin
Answer: (B) Crick
12. In Lac operon where does repressor protein bind ?
(A) Operator (B) Promoter
(C) Structural gene (D) Regulator gene
Answer: (A) Operator
13. In seeds of pepper, remnant of nucellus persists, which is called as –.
(A) Chalazosperm (B) Endosperm
(C) Pseudo embryo sac (D) Perisperm
Answer:(D) Perisperm
14. If production of seeds occurs without fertilization, it is called as —- .
(A) Amphimixis (B) Apomixis
(C) Parthenocarpy (D) Parthenogenesis
Answer: (B) Apomixis
15. RNA polymerase III is not responsible for synthesis of which of the following ?
(A) hn RNA (B) t RNA
(C) 5 sr RNA (D) sn RNA
Answer: (C) 5 sr RNA
16. Pollen grains are well preserved as fossils because —.
(A) Pollen grain has a wall
(B) Wall has exine of sporopollenin
(C) Wall has intine of pectocellulose
(D) Wall has cellulose
Answer:
17. Backbone of polynucleotide chains of DNA is composed of which of the following ?
(A) Sugar-phosphate-base (B) Phosphate-base
(C) Sugar-phosphate (D) Stack of paired bases
Answer: (C) Sugar-phosphate
18. Which one is Genotypic ratio of F2 generation of monohybrid cross conducted by Mendel ?
(A) 3 : 1 (B) 1 : 2 :1
(C) 9 : 3 : 3 : 1 (D) 1 : 1
Answer: (B) 1 : 2 :1
19. Which of the following secretes gonadotropin releasing hormone ?
(A) Ovary (B) Testis
(C) Posterior pituitary gland (D) Hypothalamus
Answer: (D) Hypothalamus
20. After fertilization, wall of ovary develops into which structure ?
(A) Epicarp (B) Seed
(C) Mesocarp (D) Pericarp
Answer: (D) Pericarp
Bihar Board Class 12th Biology Guess Questions with Answers – SAQs
1. Give the Two reasons of extinction of some wild animals.
Answer: If action is not taken to safeguard wildlife, certain species may go extinct entirely. Look at the causes behind the extinction of certain wild animals.
- Destruction of their natural habitats due to forest fires, overgrazing, urbanisation, etc.
- limitless deforestation.
- Overuse of the environment’s resources.
- Hunting and poaching of wildlife without a permit.
2. Write the name of two antibiotices which are Obatined from bacteria.
Answer: Among the well-known antibiotics obtained from bacteria are streptomycin, tetracycline, and erythromycin.
3. What are the names of the constituent cells of the embryo sac?
Answer: The embryo sac is haploid and multicellular. There are eight nuclei in it. Of the eight nuclei, four are located near the end of the chalazal, and the remaining four at the end of the micropylar. The core nuclei, antipodal cells, and egg apparatus make up the embryo sac.
4. Define Greenhouse effect. Write down name of two Greenhouse gases.
Answer: The process by which solar radiation is absorbed by greenhouse gases rather being reflected back into space is known as the greenhouse effect. The earth’s temperature has significantly increased as a result of the rising greenhouse gas concentrations. This has had a number of extreme consequences.
Name of two Greenhouse gases are carbon dioxide, chlorofluorocarbons.
5. What is vital index? Write the formula to find it
Answer: The Vital Index is the ratio of births to deaths within a population during a specific period of time.
The formula to find vital index is = Natality / Mortality x 100
A population’s birth rate, also known as its natality rate, is the number of births per 1,000 people in the population annually. A population’s annual death rate, also known as its mortality rate, is typically stated as the number of deaths per 1,000 people.
As a result, the vital index formula is Natality / Mortality x 100
6. Define biodiversity and explain its importance.
Answer: The distinctions and variation among living things from all origins are referred to as biological diversity or biodiversity. The evolution of life from genes to ecosystems, including species’ existence, genetic variations, environments, populations, and the ecosystems in which they coexist, as well as other evolutionary developments that maintain the system’s ability to function, change, and adapt, is broadly characterized by biological diversity.
The mechanisms that sustain all life on Earth, including human existence, depend on biodiversity. The healthy ecosystems that give us the oxygen to breathe and the food to eat are dependent on a diverse range of animals, plants, and microorganisms.
7. Name the causal organism of the following diseases.
(A) Tuberculosis
(B) Filaria
(C) AIDS
(D) Ring worm
Answer:
(A) Tuberculosis – Mycobacterium tuberculosis.
(B) Filaria -Wuchereria bancrofti and Brugia malayi
(C) AIDS- Human immunodeficiency virus (HIV)
(D) Ring worm -Trichophyton, Microsporum, and Epidermophyton.
8. What are the difference between DNA and RNA?
Answer: The are major differences that difference between DNA and RNA are
(a) RNA includes ribose, whereas DNA contains the slightly different chemical deoxyribose.
(b) Unlike DNA, most RNA molecules are single-stranded and can adopt very complex three-dimensional structures.NA is double-stranded while RNA is single-stranded.
(c) RNA has the nucleobase uracil, whereas DNA has thymine.
9. Why is restriction endonuclease called as ‘molecular scissors’ ?
Answer: Restriction enzymes are also known as “molecular scissors” because they cut DNA at or near certain recognition sequences known as restriction sites. These enzymes, also known as restriction endonucleases, make one incision in each of the two strands of DNA
10. What is an endemic species ?
Answer: Endemic species are ones that can only be found in one place and nowhere else on the planet. For example, endemic species such as Galápagos tortoises and Madagascar lemurs can be found on small islands. Big islands offer the same remoteness, but on a greater scale.