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Chapters
2: Human Reproduction
3: Reproductive Health
4: Principles of Inheritance and Variation
5: Molecular Genetics
6: Evolution
▶ 7: Human Health and Diseases
8: Immunology
9: Microbes in Human Welfare
10: Applications of Biotechnology
11: Organisms and Populations
12: Biodiversity and its Conservation
13: Environmental Issues
![Samacheer Kalvi solutions for Biology (Zoology) [English] Class 12 TN Board chapter 7 - Human Health and Diseases - Shaalaa.com](/images/biology-zoology-english-class-12-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Biology (Zoology) [English] Class 12 TN Board chapter 7 - Human Health and Diseases")
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Solutions for Chapter 7: Human Health and Diseases
Below listed, you can find solutions for Chapter 7 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Biology (Zoology) [English] Class 12 TN Board.
Samacheer Kalvi solutions for Biology (Zoology) [English] Class 12 TN Board 7 Human Health and Diseases Evaluation [Pages 126 - 127]
Malaria caused by Plasmodium is transmitted through ____________.
Air
Contact
Fleas on food
Mosquito bites
A 30 year old woman has bleedy diarrhoea for the past 14 hours, which one of the following organisms is likely to cause this illness?
Streptococcus pyogens
Clostridium difficile
Shigella dysenteriae
Salmonella enteritidis
Which of the following disease is spread through droplet nuclei?
Tularemia
Listeriosis
Chicken pox
Mumps
Exo-erythrocytic schizogony of Plasmodium takes place in ____________.
RBC
Leucocytes
Stomach
Liver
The sporozoites of Plasmodium vivax are formed from ________.
Gametocytes
Sporoblasts
Oocysts
Spores
Poliomyelitis which causes infantile paralysis enters the body through ____________.
Skin
Mouth and nose
Ears
Eyes
Amphetamines are stimulants of the CNS, whereas barbiturates are ________.
CNS stimulant
both a and b
hallucinogenic
CNS depressants
Marijuana is extracted from ____________.
Dried leaves and flowers of hemp plant
Ergot fungus
Roots of hemp plant
Cocoa plant
Choose the correctly match pair.
Amphetamines - Stimulant
LSD - Narcotic
Heroin - Psychotropic
Benzodiazepine - Pain killer
The Athlete’s foot disease in human is caused by ____________.
Bacteria
Fungi
Virus
Protozoan
Cirrhosis of liver is caused by chronic intake of ____________.
Opium
Alcohol
Tobacco
Cocaine
The sporozoite of the malarial parasite is present in _______.
Saliva of infected female Anopheles mosquito
RBC of human suffering from malaria
Spleen of infected humans
Gut of female Anopheles mosquito
Haemozoin is ____________.
precursor of hemoglobin
toxin released from Streptococcus infected cells
toxin released from Plasmodium infected cells
toxin released from Haemophilus infected cells
The drug synthesised from Datura is ____________.
Hallucinogen
Depressant
Stimulant
Pain killer
Where do the following events in the life cycle of Plasmodium takes place?
a) Fertilization - _________
b) Development of gametocytes - __________
c) Release of sporozoites - ________
d) Schizogony - _________
Match the pathogens with respective diseases caused by them and select the correct match using the codes given below.
| Column I | Column II |
| I. Leishmania donavani | 1. Malaria |
| II. Wuchereria bancrofti | 2. Amoebiasis |
| III. Trypanosoma gambiense | 3. Kala - azar |
| IV. Entamoeba histolytica | 4. Sleeping sickness |
| 5. Filariasis |
A - 2, B - 4, C - 3, D - 1
A - 1, B - 4, C - 3, D - 2
A - 3, B - 2, C - 1, D - 4
A - 4, B - 1, C - 2, D - 3
Complete the following table:
| Diseases | Causative agent | Site of infection | Incubation period |
| Mumps | |||
| Chicken pox | |||
| Dengue fever |
List the causative agent, mode of transmission and symptoms for Diphtheria and Typhoid.
Compare and contrast bacillary dysentery and amoebic dysentery.
A patient was hospitalized with fever and chills. Merozoites were observed in her blood. What is your diagnosis?
Write the symptoms of filariasis.
Write the scientific name of the filarial worm that causes filariasis.
How is this disease transmitted?
List the common withdrawal symptoms of drugs and alcohol abuse.
| Diseases | Causative agent | Symptoms |
| Ascariasis | Ascaris | |
| Trichophyton | Appearance of dry, scaly lesions on various parts of the body | |
| Typhoid | High fever, weakness, headache, stomach pain and constipation. | |
| Pneumonia |
What is Kala-azar?
Why do you think it is not possible to produce vaccine against 'common cold'?
Solutions for 7: Human Health and Diseases
Samacheer Kalvi solutions for Biology (Zoology) [English] Class 12 TN Board chapter 7 - Human Health and Diseases
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Biology (Zoology) [English] Class 12 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Biology (Zoology) [English] Class 12 TN Board Tamil Nadu Board of Secondary Education 7 (Human Health and Diseases) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Biology (Zoology) [English] Class 12 TN Board chapter 7 Human Health and Diseases are Common Diseases in Human Beings, Maintenance of Personal and Public Hygiene, Adolescence - Drug and Alcohol Abuse, Mental Health – Depression, Lifestyle Disorders Inhuman Beings.
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