Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 12 Biology Human Health and Diseases
Measures useful for the prevention and control of alcohol and drugs abuse among adolescents
(i) Avoid undue peer pressure
(ii) Education and counselling
Which are commonly abused drugs?
Commonly abused drugs are opioids, cannabinoids and coca alkaloids. Drugs like barbiturates, amphetamines,benzodiazepines, lysergic acid
Techniques to detect cancer.
Techniques like radiography (use of X-rays),
List out major causes of cancer.
Carcinogens-(Physical agents, chemical agents ,biological
a.Name the diagnostic test for AIDS?
b.How can we treat AIDS?
.a.Diagnostic test for AIDS is enzyme linked immuno-sorbent assay (ELISA). b.Treatment of AIDS with anti-retroviral
b.Name the pathogen causing AIDS?
a.Acquired Immuno Deficiency Syndrome.
b.AIDS is caused by the Human Immuno deficiency
Name the drugs used to reduce allergic symptoms?
.Allergy is due to the release of chemicals like histamine and serotonin from the mast cells. Drugs like anti-histamine,
List out the major Symptoms of allergy?
Symptoms of allergic reactions include
.Define allergy ?Common examples of allergens?
The exaggerated response of the immune system to certain antigens present in the environment is called allergy .Examples of allergens are
How Vaccines work in our body and prevent diseases?
.Vaccines act as antigens which causes production of antibodies that neutralize the pathogenic agents, generate memmory
Define innate immunity ? Mention the barriers which help in innate immunity? Site examples
Immunity present at the time of birth is called Innate immunity.
Physical barriers - skin
Recent widespread incidences of the vector-borne (Aedes mosquitoes)diseases like dengue and chikungunya in many parts of India point towards poor vector control practices prevailing in India Mention a few ways to control mosquitoes?
Mosquitoes can be controlled by
avoiding stagnation of water in and around residential
Maintenance of personal and public hygiene is very important for prevention and control of many infectious diseases. Mention a few ways to achieve personal and public hygiene ?
Keeping the body clean,
consumption of clean drinking water, food, vegetables, fruits,
.How human beings get Ringworms infection ?
Ringworms are generally acquired from soil or by using towels, clothes or even the comb of infected
List out some factors essential to maintain good health ?
For achieving good health.
a.Define health ?
b.Mention the factors affecting health?
a.Health could be defined as a state of complete physical, mental and social well-being.
(a).Name the pathogen which cause typhoid
(b).List out the symptoms of typhoid
(c ).Write the mode of infections
b.is a pathogenic bacterium which causes
a.Differentiate infectious and non -infectious diseases
a.Infectious : Diseases which are easily transmitted from one person to another, are called infectious
a.Identify the disease
b.Name the causative organism
c.Write the symptoms of this disease
a.Elephantiasis or filariasis
b.Wuchereria (W. bancrofti
a.Name the disease caused by Ascaris.
b.Write the symptoms of this disease.
c.Explain the mode of transmission of this disease
a.Name the parasite which cause amoebiasis (amoebic dysentery)
b.Write the symptomps of amoebiasis.
c.Explain the mode of infection
Briefly explain the life cycle and mode of action of plasmodium in human body
Plasmodium enters the human body as sporozoites (infectious form)
through the bite of infected female Anopheles
a. Name the pathogen which cause malignant malaria
b.Name the vector of malarial disease.
c.Name the infectious form of plasmodium which enters the human body.
a.Name the disease which is caused by Rhino virus
b.List out the symptoms of this disease.
c.Explain the mode of infection of this disease.
a. Common cold
Name any four bacterial diseases you have studied
Explain the mode of infection of pneumonia in a healthy person.
i.A healthy person acquires the infection by inhaling the droplets/aerosols released by an infected
a.Name the pathogen which cause the disease pneumonia.
b.Name the part where the infection occures.
c.List out any four symptoms of this disease
a. i.Streptococcus pneumoniae
Typhoid fever could be confirmed by ............... test
a.Name the pathogen which cause typhoid
b.List out any three symptoms of typhoid
c.In what way it infect to a person
b.Sustained high fever (39° to
The disease causing organisms are called .............................
Differentiate infecious diseases and non -infecious diseases
Give one example for each
Infectious diseases : Diseases which are easily transmitted from one person to another
a.Define health .
b.Write any two importance of health
a.Health is the state of complete physical,mental and social well being.
List out any six methods to achieve good health
a. Balanced diet