12th Biology chapter 8: full solution, notes, MCQ, & free PDF | Bihar board

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12th Biology chapter 8: cover all important question with new latest pattern. you can download Biology chapter 8 notes & full solution as PDF format in English. below we are goin to cover chapter 8 Biology class 12 Bihar board
Bihar board Biology chapter 8 class 12: specially we focused on Bihar board latest pattern of Biology, and on this post covered class 12th Biology chapter 8 based on Bihar board. check out below to get full solutions of Biology chapter 8 class 12 Bihar board.

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
 Answer: (A) By bacteria
17. Which of the following is a bacterial disease?
    • (A) Cancer
    • (B) Tuberculosis
    • (C) AIDS
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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