12th Biology chapter 9: full solution, notes, MCQ, & free PDF | Bihar board

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12th Biology chapter 9: cover all important question with new latest pattern. you can download Biology chapter 9 notes & full solution as PDF format in English. below we are goin to cover chapter 9 Biology class 12 Bihar board
Bihar board Biology chapter 9 class 12: specially we focused on Bihar board latest pattern of Biology, and on this post covered class 12th Biology chapter 9 based on Bihar board. check out below to get full solutions of Biology chapter 9 class 12 Bihar board.

12th Biology chapter 9 Bihar board with NCERT-Details & Highlights

name of content 12th Biology chapter 9 full solution
content Biology objective type MCQ question with answer
name of subjects  class 12 Biology
important for exam Bihar board & other state board
pattern & Level  NCERT & State level question

12th Biology chapter 9 all objective solutions – download PDF

1. Which vitamin is found in golden/golden paddy?
    • ( A ) B
    • ( B ) A
    • ( C ) D
    • ( D ) C
 Answer: (B) A
2. Each plant cell can form a complete plant. this property is called
    • (A) Cloning
    • (B) Somavaloning
    • (C) Totipotency
    • (D) none of these
 Answer: (C) Totipotency
3. Manufactures Honey
    • (A) male bee or drone
    • (B) worker or servant bee
    • (C) Queen Bee
    • (D) Both ‘ A ‘ and ‘ C ‘
Answer: (B) worker or servant bee
4. Semen is frozen in what?
    • (A) in water
    • (B) in normal refrigerator
    • (C) in liquid nitrogen
    • (D) none of these
Answer: (C) in liquid nitrogen
5. What is the fusogen of protoplast culture?
    • (A) Liquid Nitrogen
    • ( B ) PEG
    • (C) lactic acid
    • (D) all of these
 Answer: (B) PEG
6. What is the type of Kalyan gold?
    • (A) Paddy
    • (B) Wheat
    • (C) Maize
    • (D) peas
Answer: (B) Wheat
7. Due to trisomy (2n + 1 ) children become retarded, what is it called?
    • (A) Yellowdelphia
    • (B) Down’s syndrome
    • (C) Albinism
    • (D) none of these
 Answer: (B) Down’s syndrome
 8. By whom is the pollination done in wheat?
    • (A) Air
    • (B) Meiji
    • (C) Maize
    • (D) man
Answer: (A) Air
9. Whose varieties are high yielding and disease resistant ‘Sonalika’ and ‘Kalyan Sona’?
    • (A) Paddy
    • (B) Wheat
    • (C) Maize
    • (D) Cotton
 Answer: (B) Wheat
10. Which genetic disease is caused by trisomy of 21st chromosome?
    • (A) Kline Felter Syndrome
    • (B) Turner syndrome
    • (C) Tooth cell malformation
    • (D) Down syndrome
 Answer: (D) Down syndrome

Bihar Board most mcq solution 12th biology chapter 9

11. Mehsana is a species of
    • (A) Cow’s
    • (B) Buffalo
    • (C) Sheep
    • (D) Goat’s
Answer: (B) Buffalo
12. Which of the following is the most nutritious?
    • (A) Wheat
    • (B) Bhavka
    • (C) Millet
    • (D) Rice
Answer: (C) Millet
13. Normal Borlaug is called the father of Green Revolution, he produced a new creme of
    • (A) Paddy
    • (B) Rice
    • (C) Wheat
    • (D) Sugarcane
Answer: (C) Wheat
14. In the origin of the mule, between whom does the hybridization take place?
    • (A) Male donkey and female horse
    • (B) male horse and female donkey
    • (C) bull and donkey
    • (D) none
Answer: (A) Male donkey and female horse
15. In which stage the fertilized eggs are removed in artificial semen – Rochan.
    • (A) 4.12 at the cell stage
    • (B) at 8-16 cell stage
    • (C) at 8-22 cell stage
    • (D) in all these cases
 Answer: (C) 8-22 in the cell stage
16. ‘Pusa Swarnim’ mustard variety is resistant to which disease?
    • (A) Chile mosaic yirus
    • (B) Bacterial virus
    • (C) White Garrick
    • (D) bitten body
 Answer: (C) White Garrick
17. Rokerum warvari was originally grown in
    • (A) Southern India
    • (B) Northern India
    • (C) Mauritius
    • (D) Nagaland
Answer: (B) Northern India
18. Each cell of a plant has the capacity to give rise to a new plant, it is called
    • (A) Gene cloning
    • (B) Somaclonal Charity
    • (C) cellular totipotency
    • (D) none of these
 Ans: (C) Cellular totipotency
19. Which of the following is Kent – fish
    • (A) Katla Katla
    • (B) Valaga Attu
    • (C) Levidorship
    • (D) Sirrhinus Mrigala
 Answer: (B) Valaga Attu
 20. The technique of obtaining large number of plantlets by tissue culture is called
    • (A) Organ Culture
    • (B) Micro amplification
    • (C) Macroprogression
    • (D) Plantlet Culture
Ans: (B) Micro amplification

BSEB objective solution 12th biology chapter 9

21. Most Krishnas are Plants
    • (A) Autopolyploid
    • (B) Allopolyploid
    • (C) aneuploidous
    • (D) Haploides
 Answer: (B) Allopolyploid
22. Triticale is the first cereal crop produced by man, it has been prepared by crossbreeding wheat with?
    • (A) Rye
    • (B) Millet
    • (C) Sugarcane
    • (D) Barley
Answer: (A) Rai
23. The medium of pollination in entomophilous flowers is
    • (A) Ant
    • (B) insect
    • (C) Birds
    • (D) none of these
Answer: (B) Insects
24. Which of the following is not a species of cow?
    • (A) Jersey
    • (B) Karan Swiss
    • (C) Karan Fries
    • (D) Tobacco
Answer: (D) Tobacco
25. There is an excess of roughage
    • (A) in the egg
    • (B) minerals
    • (C) grains
    • (D) in grass, straw, fodder
 Answer: (D) in grass, straw, fodder
26. Calvicine is caused by
    • (A) Chromosome aberrations
    • (B) Accelerated transcription
    • (C) gene mutation
    • (D) diploidy of chromosomes
 Answer: (D) Duplication of chromosomes
27. A cybrid is a hybrid found in
    • (A) cytoplasm of two different plants
    • (B) Genome and cytoplasm of two different plants
    • (C) cytoplasm of two different plants and genome of one plant
    • (D) Genomes of two different plants 35. Forms a self-fertilizing triploid plant
 Answer: (C) cytoplasm of two different plants and genome of one plant
28. Somaclonal variation can be obtained from
    • (A) using colvicine
    • (B) by hybridization
    • (C) elimination of gamma rays
    • (D) tissue culture
Answer: (D) tissue culture
29. Which of the following is a viral disease of poultry?
    • (A) coryza
    • (B) New Kessel disease
    • (C) Pasteurellosis
    • (D) salmonellosis
 Answer: (B) Newcastle disease
30. Which chemical is used to induce polyploidy?
    • (A) Cytokinin
    • (B) Nitrous acid
    • (C) Calvicine
    • (D) IAA
Answer: (C) Calvicine

12th bilogy chapter 9 Important most mcq solution 

 31. The disorganized group of cells which are myeloblastic and arise from the explant during tissue culture is called
    • (A) Embroidered
    •  (B) Callus
    • (C) Somatic Embryo
    • (D) none of these
Answer: (B) Callus
32. About how many years ago wheat, paddy, sugarcane etc. were grown crops?
    • ( A ) 5000
    • ( B ) 6000
    • ( C ) 3000
    • ( D ) 2000
Answer: (A) 5000
33. The animal scientific name of Indian buffalo is
    • (A) Viewballus Buballus
    • (B) Bose indicus
    • (C) Bose Taurus
    • (D) Gallus Gallus
Answer: (B) Bose Indicus
34. The world’s best milch breed is
    • (A) Chittagong
    •  (B) Callus
    • (C) Holstein – Frisian
    • (D) none of these
Answer: (C) Holstein – Frisian
35. Duff (stained dough) is soft (light) due to
    • (A) Carbon dioxide
    •  (B) Callus
    • (C) Oxygen
    • (D) none of these
 Answer: (A) Carbon dioxide
36. Three crops that make up the largest portion of world food production
    • (A) Wheat, Rice and Maize
    • (B) Wheat, Rice and Barley
    • (C) Wheat, Maize and Jowar
    • (D) Rice, Maize and Jowar
Answer: (A) Wheat, Rice and Maize
37. Which of the following is not a species of cow?
    • (A) Jersey
    • (B) Karan Swiss
    • (C) Karan Fries
    • (D) Tobacco
 Answer: (D) Tobacco
38. There is an abundance of defenses
    • (A) in the egg
    • (B) minerals
    • (C) grains
    • (D) in grass, straw, fodder
Answer: (D) in grass, straw, fodder
39. Spirulina is a rich source of
    •  (A) Protein
    • (B) Vitamins
    • (C) Minerals
    • (D) all of the above
Answer: (A) Protein
40. ‘Katla’ fish is found in
    • (A) soft water
    • (B) both soft water and hard water
    • (C) hard water
    • (D) none of these
Answer: (A) soft water

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Bihar board 12th Biology chapter 9 complete objective

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01 Physics
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03 Biology
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