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NCERT - Health and Diseases Questions and Answers of Class 12 Biology | GkSeries

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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Health and Diseases of Biology.
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226 Antibodies present in colostrum which protect the new born from certain diseases is of
[1] Ig G type
[2] Ig E type
[3] Ig D type
[4] Ig A type
Answer: Ig A type
227 When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could be that:
[1] the patient was not efficient at his work
[2] the patient was not economically prosperous
[3] the patient shows behavioural and social maladjustment
[4] he does not take interest in sports
Answer: the patient shows behavioural and social maladjustment

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228 The sporozoites that cause infection when a female Anopheles mosquito bites a human being are formed in:
[1] Liver of human
[2] RBCs of mosquito
[3] salivary glands of mosquito
[4] intestine of human
Answer: salivary glands of mosquito
229 The organisms which cause diseases in plants and animals are called:
[1] Pathogens
[2] Vectors
[3] Insects
[4] Worms
Answer: Pathogens
230 Many diseases can be diagnosed by observing the symptoms in the patient. Which group of symptoms are indicative of pneumonia?
[1] Difficulty in respiration, fever, chills, cough, headache
[2] Constipation, abdominal pain, cramps, blood clots
[3] Nasal congestion and discharge, cough, sorethroat, headache
[4] High fever, weakness, stomach pain, loss of appetite and constipation
Answer: Difficulty in respiration, fever, chills, cough, headache
231 Smack’ is a drug obtained from the:
[1] latex of Papaver somniferum
[2] leaves of Cannabis sativa
[3] flowers of Dhatura
[4] fruits of Erythroxyl coca
Answer: latex of Papaver somniferum
232 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?
[1] auto-immune response
[2] humoral immune response
[3] physiological immune response
[4] cell-mediated immune response
Answer: cell-mediated immune response
233 Anti venom against snake poison contains:
[1] Antigens
[2] Antigen-antibody complexes
[3] Antibodies
[4] Enzymes
Answer: Antibodies
234 One of the following is not the causal organism for ringworm
[1] Microsporum
[2] Trichophyton
[3] Epidermophyton
[4] Macrosporum
Answer: Macrosporum
235 The genes causing cancer are
[1] structural genes
[2] expressor genes
[3] oncogenes
[4] regulatory genes
Answer: oncogenes
236 Which of the following glands is large sized at birth but reducies in size with aging?
[1] Pineal
[2] Pituitary
[3] Thymus
[4] Thyroid
Answer: Thymus

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