NCERT Multiple Choice Questions and Answers of Biology from Chapter Health and Diseases | Health and Diseases Questions and Answers of Class 12 Biology | Biology - Health and Diseases MCQs | NCERT Solution of Class 12 Biology Health and Diseases

31 Vector host of malaria is

[1] Female Anopheles mosquito

[2] Male Anopheles mosquito

[3] Aedes mosquito

[4] Culex mosquito Answer

Answer: Female Anopheles mosquito

32 Which one of the following diseases is caused by bacteria

[1] Rabies

[2] Small pox

[3] Measles

[4] Tuberculosis

Answer: Tuberculosis

33 Which of the following is fourth dimension of health?

[1] physical

[2] mental

[3] mental

[4] spiritual

Answer: spiritual

34 Itai-Itai disease is caused by _____.

[1] Mercury

[2] Lead

[3] Cadmium

[4] Iron

Answer: Cadmium

35 Anaplasia is

[1] Transfer of cancer cells

[2] Formation of tumour

[3] Loss of cells adherence and cell differentiation

[4] Action of lysosomes over cells

Answer: Loss of cells adherence and cell differentiation

36 Heamophilia disease can transfer through ______.

[1] Heredity

[2] Metal

[3] Pollutant

[4] Vector

Answer: Heredity

37 AIDS virus spreads in the body through

[1] Suppressor T-cells

[2] Carrier T-cells

[3] Helper T-cells

[4] Killer T-cells

Answer: Helper T-cells

38 The pathogen of the typhoid is directly transmitted through

[1] urine

[2] water

[3] blood

[4] cerebrospinal

Answer: water

39 Swine Flu is caused by

[1] HIV

[2] HINI

[3] Herpes zostr

[4] Mumps virus

Answer: HINI

40 Beri-Beri is caused by the deficiency of ______.

[1] Vitamin D

[2] Vitamin B

[3] Vitamin C

[4] Vitamin E

Answer: Vitamin B

41 Sarcoma is cancer of

[1] Epithelial tissue

[2] Endodermal tissue

[3] Ectodermal tissue

[4] Mesodermal tissue

Answer: Mesodermal tissue

42 AIIDs spreads through

[1] Blood transfusion

[2] Placental transmission

[3] Sexual contact

[4] all of the above

Answer: all of the above

43 Which of the following is not congenital disease?

[1] sickle cell anaemia

[2] albinism

[3] haemophilia

[4] hepatitis

Answer: hepatitis

44 Congenital diseases caused by environmental factors are

[1] PKU and sickle cell anaemia

[2] Down’s syndrome and Turner’s syndrome

[3] Haemophilia and colour blindness

[4] Cleft palate and harelip

Answer: Cleft palate and harelip

45 Typhoid is caused by a species of

[1] Streptococcus

[2] Salmonella

[3] Staphylococcus

[4] Mycobacterium

Answer: Salmonella

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