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12th Biology chapter 8 Bihar board with NCERT-Details & Highlights
| name of content | 12th Biology chapter 8 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 8 all objective solutions – download PDF
1. Wuchereria bancrofti causes filarial disease in man. Which group does this belong to?
-
- (A) Protozoa
- (B) bacteria
- (C) Virus
- (D) Helminthes
Answer: (D) Helminthes
2. What is the Widal test used to confirm?
-
- (A) Malaria
- (B) Typhoid
- (C) AIDS
- (D) Helminthes
Answer: (B) Typhoid
3. Triple antigen vaccine is not used?
-
- (A) Diphtheria
- (B) Perieusis
- (C) Typhoid
- (D) Tetranus
Answer: (C) Tetranus
4. Which of the following is a sexually transmitted disease?
-
- (A) Typhoid
- (B) cholera
- (C) Malaria
- (D) Syphilis
Answer: (D) Syphilis
5. The cause of elephantiasis is
-
- (A) Ascaris
- (B) tinea
- (C) Wuchereria
- (D) Entamoeba
Answer: (C) Wucherria
6. What does Vidal test reveal?
-
- (A) AIDS
- (B) Malaria
- (C) tuberculosis
- (D) Typhoid
Answer: (D) Typhoid
7. Oncology is the study of what?
-
- (A) melanoma
- (B) In lymphoma
- (C) In sarcoma
- (D) Carcinoma
Answer: (D) Carcinoma
8. T-lymphocyte is produced
-
- (A) from thymus
- (B) stomach
- (C) From the bone marrow
- (D) liver
Answer: (A) Thymus
9. Which of the following cells does HIV attack?
-
- (A) B-cell
- (B) T-cell
- (C) Epithelial cell
- (D) T-helper cells
Answer: (D) T-helper cells
10. What causes cancer?
-
- (A) By bacteria
- (B) By oncogenes
- (C) Both ‘ A ‘ and ‘ B ‘
- (D) none of these
Answer: (B) By oncogenes
Bihar Board 12th biology chapter 8 most mcq solution
11. What is Acetavularia?
-
- (A) Algae
- (B) Protozoa
- (C) Bacteria
- (D) Virus
Answer: (A) Algae
12. Malaria disease spreads
-
- (A) Male Vulex mosquito
- (B) Male Anopheles mosquito
- (C) female Anopheles mosquito
- (D) female Aedes mosquito
Answer: (C) Female Anopheles mosquito
13. Oncogene is responsible for what?
-
- (A) Cancer
- (B) AIDS
- (C) Tuberculosis
- (D) Polio
Answer: (A) Cancer
14. Which of the following is a viral disease?
-
- (A) Palu
- (B) Polio
- (C) AIDS
- (D) all of the above
Answer: (D) All of the above
15. Filariasis is the carrier of disease?
-
- (A) male culex mosquito
- (B) Male Anopheles mosquito
- (C) female culex mosquito
- (D) female Anopheles mosquito
Answer: (C) female culex mosquito
16. Leprosy occurs
-
- (A) By bacteria
- (B) By virus
- (C) by fungi
- ( D. ALL OF THE ABOVE
Answer: (A) By bacteria
17. Which of the following is a bacterial disease?
-
- (A) Cancer
- (B) Tuberculosis
- (C) AIDS
- (D) ALL OF THE ABOVE
Answer: (D) All of the above
18. Which of the following is Ant Amiva?
-
- (A) Bacteria
- (B) AIDS
- (C) Protozoa
- (D) Fungus
Answer: (C) Protozoa
19. Which of the following is an example of autoimmune disease?
-
- (A) Damma
- (B) Rheumatoid Arthritis
- (C) AIDS
- (D) none of these
Answer: (A) Damma
20. Which of the following is the main cause of snow blindness in humans?
-
- (A) absorption of UV beta rays
- (B) Absorption of infra radiation
- (C) absorption of cosmic radiation
- (D) Snow erosion of the clean zone
Answer: (C) Absorption of cosmic radiation
21. In which disease is Viopharm used?
-
- (A) cholera
- (B) in malaria
- (C) in amoebic dysentery
- (D) in AIDS
Answer: (C) in amoebic dysentery
BSEB 12th biology chapter 8 most objective solution
22. Morphine obtained from opium is
-
- (A) Latex
- (B) pom
- (C) Alkaloids
- (D) tannin
Answer: (C) Alkaloids
23. World AIDS Day is
-
- (A) May 1
- (B) December 20
- (C) June 1
- (D) 1st December
Answer: (D) 1st December
24. AIDS is the cause.
-
- (A) bacteria
- (B) Protozoa
- (C) HIV virus
- (D) Trichomonas
Answer: (C) HIV virus
25. Influenza is caused by
-
- (A) info virus
- (B) Mixo virus
- (C) herpes virus
- (D) none of these
Answer: (B) Mixo virus
26. Meaning of syndrome
-
- (A) disease state
- (B) Vigor of the infective
- (C) Malignancy
- (D) a set of symptoms
Answer: (D) group of symptoms
27. Allergic to which group of antibodies cause an allergic reaction?
-
- ( A ) IgG
- (B) IgE
- ( C ) IgM
- (D) IgA
Answer: (B) IgE
28. Sensitive substance in the following is
-
- (A) Tobacco or Tobacco
- (B) Liquor or alcohol
- (C) Hashish or Heroin
- (D) Cannabis or Opium / Coffee
Answer: (A) Tobacco or Tobacco
29. Have Antibodies
-
- (A) lipoprotein
- (B) Steroids
- (C) Glycoprotein
- (D) Prosta glandins
Answer: (C) Glycoprotein
30. Brown is Sugar
-
- (A) Diacetyl Morphine Hydrochloride
- (B) theophylline
- (C) Lorajipam
- (D) Methidine
Answer: (D) Methidine
31. If a person is more deficient in immunity, then in whom will we see the proof?
-
- (A) Fibrinogen in plasma
- (B) in hemocytes
- (C) in serum albumins
- (D) in serum globulins
Answer: (D) Serum globulins
32. Which of the following is a virus-borne disease?
-
- (A) Malaria
- (B) Polio
- (C) Kala-azar
- (D) wart in the anus
Answer: (B) Polio
Impotant most mcq solution 12th biology chapter 8
33. Which of the following diseases is transmitted by protozoan parasites?
-
- (A) Amoebiasis
- (B) Malaria
- (C) Kala-azar
- (D) all of the above
Answer: (D) All of the above
34. LSD is prepared by
-
- (A) Cannabis
- (B) Claviceps
- (C) Peucerium
- (D) Nostock
Answer: (B) Claviceps
35. The pathogen of Phil-foot or elephant-foot disease is
-
- (A) Poocheria
- (B) Ascaris
- (C) Tinea
- (D) none of these
Answer: (A) Poocheria
36. Who discovered that malaria is transmitted by mosquito?
-
- (A) Grassi
- (B) Leveron
- (C) Lancy
- (D) Ronald Ross
Answer: (D) Ronald Ross
37. The infection period of Plasmodium vivax is
-
- (A) 4 days
- (B) 6 days
- (C) 14 days
- (D) 30 days
Answer: (B) 6 days
38. Human infecting stage of Plasmodium is
-
- (A) Saporozoite
- (B) trophozoite
- (C) gastocyte
- (D) merozoite
Answer: (A) Saporozoite
39. The oocyte from Plasmodium is formed from?
-
- (A) trophozoite
- (B) zygote
- (C) sporozoite
- (D) merozoite
Answer: (B) zygote
40. Ascaris is found in
-
- (A) in the body cavity
- (B) in the lymph node
- (C) in the tissue
- (D) in the alimentary canal
Answer: (D) in the alimentary canal
41. Third release occurs in Ascaris
-
- (A) in the bowel
- (B) in the lungs
- (C) in the liver
- (D) eggs
Answer: (B) Lungs
42. The infectious stage of Ant amoeva histolytica is
-
- (A) Trophozoite condition
- (B) Bicentric cyst condition
- (C) Quaternary cyst condition
- (D) none of these
Ans: (C) quaternary cyst condition
43. A person is on hunger strike for a long time and survives by drinking water.
-
- (A) The amount of sodium in the urine will be high
- (B) low concentration of amino acids in urine
- (C) the amount of glucose in the blood is high
- (D) the amount of urea in urine is low
Answer: (A) The amount of sodium in urine will be more
44. What is hemojoin?
-
- (A) reduced part of blood by Plasmodium trophozoite
- (B) Anopheles blood pigment
- (C) Fractured blood in merozoite
- (D) molecules in the blood of infected humans
Answer: (A) Reduction of blood by Plasmodium trophozoite
45. Exoerythrocytic cycle of Plasmodium is
-
- (A) Man V in RRCS
- (B) in man
- (C) in the stomach of Anopheles mosquito
- (D) salivary glands of Anopheles mosquito
Answer: (C) in the stomach of Anopheles mosquito
46. Penga is related to
-
- (A) glucagon
- (B) Thyrovision
- (C) progesterone
- (D) eggs
Answer: (B) Thyrovision
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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 |