CBSE Class 12 Biology Human Health And Diseases Worksheet Set B

Download printable Biology Class 12 Worksheets in pdf format, CBSE Class 12 Biology Human Health And Diseases Worksheet Set B has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Biology Class 12 Assignments and practice them daily to get better marks in tests and exams for Grade 12. Free chapter wise worksheets with answers have been designed by Standard 12 teachers as per latest examination pattern

Human Health and Disease
 
1. In the immune system, interferons are a part of
(a) physiological barriers
(b) cellular barriers
(c) physical barriers
(d) cytokine barriers.
 
2. The letter T in T-lymphocytes refers to
(a) tonsil
(b) thalamus
(c) thymus
(d) thyroid
 
3. Use of anti-histamines and steroids gives a quick relief from
(a) allergy
(b) nausea
(c) cough
(d) fever
 
4. The immunoglobulin abundant in colostrum, is
(a) Ig D
(b) Ig A
(c) Ig G
(d) Ig M
 
5. Diacetyl morphine is commonly known as
(a) cocaine
(b) hashish
(c) ganja
(d) heroin
 
6. Opium is extracted from
(a) Atropa belladona
(b) Papaver somniferum
(c) Erythroxylum coca
(d) Cannabis sativa
 
7. The disease chikungunya is transmitted by
[NCERT Exemplar]
(a) houseflies
(b) Aedes mosquitoes
(c) cockroach
(d) female Anopheles
 
8. Anti venom against snake poison contains [NCERT Exemplar]
(a) antigens
(b) antigen-antibody complexes
(c) antibodies
(d) enzymes
 
9. Which of the following glands is large sized at birth but reducies in size with aging?
[NCERT Exemplar]
(a) Pineal
(b) Pituitary
(c) Thymus
(d) Thyroid
 
10. The substance produced by a cell on viral infection that can protect other cells from further infection is [NCERT Exemplar]
(a) serotonin
(b) colostrum
(c) interferon
(d) histamine
 
11. Many diseases can be diagnosed by observing the symptoms in the patient. Which group of symptoms are indicative of pneumonia? [NCERT Exemplar]
(a) Difficulty in respiration, fever, chills, cough, headache
(b) Constipation, abdominal pain, cramps, blood clots
(c) Nasal congestion and discharge, cough, sorethroat, headache
(d) High fever, weakness, stomach pain, loss of appetite and constipation
 
12. Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections? [NCERT Exemplar]
(a) auto-immune response
(b) humoral immune response
(c) physiological immune response
(d) cell-mediated immune response
 
13. ______ mosquitoes are the vectors of dengue and chikungunya.
 
14. ______ barriers protect the non-infected cells from further viral infections.
 
15. Cell-mediated immunity is provided by ______ .
 
16. Among non-infectious diseases, ______ is the major cause of death.
 
17. ______ test is performed to confirm typhoid.
 
18. Plasmodium enters the human body as ______ .
 
19. ______ is the toxin released by the rupture of RBCs into the blood in a malariainfected person.
 
20. _____ is the filarial worm.
 
21. ______ are the physical, chemical and biological agents that cause cancer.
 
22. Heroin is obtained by _______ of morphine.
 
23. Match the organisms (Pathogens) in Column I with the diseases they cause in Column II.
 
Column I                             Column II
A. Rhino vims                     1. Ringworm
B. Plasmodium                    2. Filariasis
C. Salmonella                     3. Common cold
D. Trichophyton                  4. Typhoid
E. Wuchereria                     5. Malaria
                                         6. Amoebiasis
 
24. Match the items in Column I with those in Column II.
 
Column I                                  Column II
A. Physiological barrier             1. Interferons
B. Cytokine barrier                   2. Skin of the body
C. Cellular barrier                     3. Tear in the eyes
D. Physical barrier                    4. Antibodies in colostrum
                                              5. Polymorpho-nuclear leucocyte
 
25. Humoral immunity is responsible for rejection of organ transplants. [True/False]
 
26. a-interferon activates the immune system and help to destroy the tumour cells. [True/False]
 
27. Cannabinoids affect the digestive system. [True/False]
 
28. Nicotine, the alkaloid in tobacco causes the hallucinogenic effect. [True/False]
 
29. Colostrum contains antibody IgA and provides passive immunity. [True/False]
 
Directions (Q30 to Q33): Mark the odd one in each of the following groups.
 
30. Saliva in the mouth, Mucus coating in respiratory tract, Tear in the eyes, Acid in the stomach.
 
31. Thymus, spleen, appendix, tonsil.
 
32. Charas, Heroin, Marijuana, Hashish.
 
33. Typhoid, Pneumonia, Diphtheria, Malaria.
 
34. Who discovered blood circulation in humans?
 
35. Name one infectious and one non-infectious disease that is the major cause of mortality.
 
36. High fever, loss of appetite, stomach pain and constipation are some of the symptoms seen in a patient. How would the doctor confirm that the patient is suffering from typhoid and not amoebiasis?
 
37. Name one respiratory disease that infects the lung alveoli and one that does not infect the lungs.
 
38. Name two diseases that spread by droplet infection.
 
39. Name two diseases whose spread can be controlled by the eradication of Aedes mosquitoes. [CBSE 2918]
Or
Name two viral diseases transmitted by Aedes mosquito.
 
40. Name the stage of Plasmodium that gains entry into the human, when bitten by an infected female Anopheles. [Delhi 2017C]
 
41. Trace the route of Sporozoite at Plasmodium, when it enters the human body through the bite of female Anopheles, till its entry into RBCs. [Delhi 2017C]
 
42. Name the host where fertilisation occurs in the life cycle of Plasmodium [Delhi 2017C]
 
43. How does malaria differ from chikungunya with reference to their vectors? [All India 2010C]
 
44. Malaria, typhoid, pneumonia and amoebiasis are some of the human infectious diseases. Which ones of these are transmitted through mechanical carriers? [Foreign 2011]
 
45. How does haemozoin affect the human body, when released in blood during malarial infection? [Foreign 2014]
 
46. Why is Gamhusia introduced into drains and ponds? [AH India 2014]
 
47. What causes swelling of the lower limbs in patients suffering from filariasis?
 
48. What role do macrophages play in providing immunity to humans?
 
49. How do monocytes act as a cellular barrier in humans to provide innate immunity? [CBSE 2018 C]
 
Or
 
In what way is monocyte a cellular barrier w’ith reference to immunity? [Delhi 2015 C]
 
50. How do neutrophils act as a cellular barrier to pathogens in humans?


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