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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 science stream subjects wise solution
click here to check out Bihar board science stream all subjects solutions
| SL.N. | Subject name with solutions |
| 01 | Physics |
| 02 | Chemistry |
| 03 | Biology |
| 04 | Math |
| 05 | Hindi |
| 06 | English |