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Test: Common Human Diseases (NCERT) - NEET MCQ


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25 Questions MCQ Test Biology Class 12 - Test: Common Human Diseases (NCERT)

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Test: Common Human Diseases (NCERT) - Question 1

Which of the following pairs contains an infectious and a non-infectious disease respectively?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 1

Infectious diseases are those diseases that can spread from one person to another e.g., AIDS. Non-infectious diseases are those diseases that cannot spread from one person to another e.g., cancer.

Test: Common Human Diseases (NCERT) - Question 2

Typhoid fever in human beings is caused by

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 2

Salmonella typhi, a rod shaped bacterium causes typhoid.. It is transmitted through contaminated food and water. Symptoms of this disease are fever, abdominal pain, weakness and loss of appetite

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Test: Common Human Diseases (NCERT) - Question 3

Which of the following statements regarding the disease typhoid is/are correct?

(i) Salmonella typhi are the pathogenic bacteria which enter human intestine through contaminated food and water and migrate to other organs through blood.
(ii) Sustained high fever (39C to 40C), weakness, stomach pain, constipation, headache and loss of appetite are some common symptoms of typhoid.
(iii) Typhoid vaccine is available as DPT vaccine.
(iv) Widal test is used for diagnosis of typhoid fever.
(v) The patient of this disease is not required to be treated with antibiotics.

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 3

DPT vaccine is for diphtheria, pertussis and tetanus. The patient suffering from typhoid is required to be treated with antibiotics as it is a bacterial disease.

Test: Common Human Diseases (NCERT) - Question 4

Which of the following factors affect human health?
(i) Infections
(ii) Silent mutations
(iii) Life style
(iv) Genetic disorders

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 4

Human health is affected by following three factors :
(i) Infections : A person gets infections from his/her surroundings.
(ii) A silent mutation is a type of DNA mutation that doesn't affect the amino acid sequence of the protein it codes for. It will not effect. 
(iii) Life style : It includes food and water we take, rest and exercise we give to our bodies and habits that we possess or lack, etc. in our life.
(iv) Genetic disorders: These are the deficiencies or defects that a child carries from parents by birth via genes.
Correct answer is i, iii, iv

Test: Common Human Diseases (NCERT) - Question 5

The common cold is caused by

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 5

Common cold is caused by some 100 types of Rhino viruses. Symptoms of common cold are irritation of nasal tract, nasal congestion, flow of mucus, sore throat, sneezing, cough, headache and mild fever.

Test: Common Human Diseases (NCERT) - Question 6

A toxic substance, responsible for the chills and high fever recurring every three to four days in malarial fever, is

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 6

In malaria, chills and shivers are caused by the release of toxic substance haemozoin into the blood at the time of RBCs rupture. It is generally followed by fever.

Test: Common Human Diseases (NCERT) - Question 7

During the life cycle of Plasmodium, sexual reproduction takes place in which of the following hosts?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 7

Malaria is caused by Plasmodium parasite. It has two hosts to complete its life cycle. Female Anopheles mosquito is the primary host in which the sexual phase of the parasite occurs. Human being is the secondary host in which the asexual phase of the parasite occurs.

Test: Common Human Diseases (NCERT) - Question 8

Amoebic dysentery (amoebiasis) is caused by

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 8

Amoebic dysentery is caused by a monogenic protozoan known as Entamoeba histolytica. The pathogen lives in the large intestine of humans. The patient passes blood along with the faeces and feels pain in the abdomen.

Test: Common Human Diseases (NCERT) - Question 9

Appearance of dry, scaly lesions with itching on various partsof the body are the symptoms of the disease

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 9

Ringworms or tinea is caused by the fungi belonging to the genera Microsporum, Trichophyton and Epidermophyton. Appearance of dry, scaly lesions with itching on various parts of the body such as skin, nails and scalp are the main symptoms of ringworm. The infection is generally acquired from soil or by using towels, clothes or even the comb of infected persons.

Test: Common Human Diseases (NCERT) - Question 10

Elephantiasis, a chronic inflammation that results in grossdeformities is caused by

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 10

Elephantiasis or filariasis is caused by a number of worms. However, in India only two types of worms are responsible for this disease, Wuchereria bancrofti and W. malayi.This disease is transmitted by female Cu/exmosquitoes. Elephantiasis affects lymphatic vessels of the lower limbs.

Test: Common Human Diseases (NCERT) - Question 11

Gambusia is a fish which is being introduced into the ponds in order to check the vector borne diseases such as

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 11

Gambusia feeds on the larvae of mosquitoes that live in water. Mosquito is a vector for all these three diseases , dengue, malaria and chikungunys.

Test: Common Human Diseases (NCERT) - Question 12

An intestinal parasite which causes blockage of the intestinal passage and whose eggs are excreted along with the faeces of infected person is____ .

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 12

Ascaris is an endoparasite of the small intestine. A large number of adult Ascaris worms normally obstruct the intestinal passage and thereby cause abdominal discomfort and colic pain. Other symptoms include impaired digestion, diarrhoea and vomiting. Ascaris's eggs are excreted along with the faeces of infected person.

Test: Common Human Diseases (NCERT) - Question 13

Which of the following pairs correctly matches a disease and a pathogen causing it?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 13
  • Typhoid - Salmonella typhi
  • Pneumonia - Streptococcus pneumoniae
  • Malaria - Plasmodium
  • Ringworm - Trichophyton
Test: Common Human Diseases (NCERT) - Question 14

Which one of the following diseases cannot be cured by taking antibiotics?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 14

Antibiotics are used to treat bacterial diseases. Plague, leprosy and whooping cough are bacterial diseases. Amoebiasis is a protozoan disease. It cannot be cured by taking antibiotics.

Test: Common Human Diseases (NCERT) - Question 15

Assertion (A): Cancer can be caused by both genetic and environmental factors.
Reason (R): Mutations in DNA can lead to uncontrolled cell growth, and these mutations can be inherited or induced by environmental exposures.

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 15

Answer: Option A.
Solution: Cancer's development can indeed result from both inherited genetic mutations and environmental factors, such as exposure to carcinogens. The reason accurately explains how these factors contribute to the mutations that can lead to cancer, making it the correct explanation for the assertion.

Test: Common Human Diseases (NCERT) - Question 16

Which of the following is not a function of the Sertoli cells in the male reproductive system?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 16

Answer: Option B: Secrete testosterone

Solution: Sertoli cells provide nutrition to spermatogonia, support developing germ cells, and secrete androgen-binding protein (ABP), but they do not secrete testosterone. Testosterone is actually secreted by the Leydig cells (interstitial cells) located in the interstitial spaces between the seminiferous tubules. An additional fact about Sertoli cells is that they also play a key role in the blood-testis barrier, protecting germ cells from autoimmune attacks.

Test: Common Human Diseases (NCERT) - Question 17

Which type of immunity is acquired after birth?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 17

Answer: Option C.

Solution: Acquired immunity, also known as adaptive or specific immunity, is the type of immunity that an individual acquires after birth. This form of immunity is mediated by B and T lymphocytes and develops as a response to exposure to pathogens, vaccines, or through the transfer of antibodies from mother to child. Acquired immunity is characterized by its ability to remember previous exposures to pathogens and mount a stronger response upon subsequent exposures.

Test: Common Human Diseases (NCERT) - Question 18

Read the following statements and select the correct option.
Statement 1: Malarial parasite requires two hosts - humans and mosquitoes to complete its life cycle.
Statement 2: Haemozoin is a toxic substance produced by the rupturing of liver cells during malarial infection.

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 18

Malarial parasite requires two hosts - humans and mosquitoes to complete its life cycle. Mosquito acts as a primary host and human acts as a secondary host. Haemozoin is a toxic substance produced by the rupturing of red blood cells.

Test: Common Human Diseases (NCERT) - Question 19

Which type of immunity is acquired after birth?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 19

Answer: Option C.

Solution: Acquired immunity, also known as adaptive or specific immunity, is the type of immunity that an individual acquires after birth. This form of immunity is mediated by B and T lymphocytes and develops as a response to exposure to pathogens, vaccines, or through the transfer of antibodies from mother to child. Acquired immunity is characterized by its ability to remember previous exposures to pathogens and mount a stronger response upon subsequent exposures.

Test: Common Human Diseases (NCERT) - Question 20

Common cold differs from pneumonia in that Pneumonia

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 20

Pneumonia is caused by bacteria, streptococcus pneumoniae and Haemophilus influenzae. It is serious disease of lungs infecting alveoli and bronchioles. It is a communicable disease. Common cold  is a viral disease caused by Rhino virus.

Test: Common Human Diseases (NCERT) - Question 21

The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 21

Microsporum and Rhizopus belong to the kingdom fungi.

Test: Common Human Diseases (NCERT) - Question 22

Where will you look for the sporozoites of malarial parasite?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 22

When a female Anopheles mosquito bites an infected person, Plasmodium enters the mosquito's body and undergoes further development. The parasites multiply within them to form sporozoites that are stored in their salivary glands.

Test: Common Human Diseases (NCERT) - Question 23

Which one of the following pairs of diseases is viral as well as transmitted by mosquitoes?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 23

Yellow fever is caused by flavivirus and dengue is caused by arbovirus. Both are transmitted by the bite of mosquito, Aedes aegypti.

Test: Common Human Diseases (NCERT) - Question 24

Which of the following is a bacterial disease?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 24

Plague is a bacterial disease caused by Yersiria pestis Symptoms of this disease are high fever and a bubo in the groin or armpit. It is primarily a disease of rodents accidently affects man. The vector of this disease is rat fleas that carries germs of plague from rat to rat. When the rats dies of plague, the fleas leave the dead rat and if any man is nearby, they bite him and inject some plague germs into his blood. Shigellosis or bacillary dysentery a diarrheal illness resulting from an acute inflammatory reaction caused by shigella,

Test: Common Human Diseases (NCERT) - Question 25

Which of the following statements is incorrect?

Detailed Solution for Test: Common Human Diseases (NCERT) - Question 25

Bacteria like Streptococcus pneumoniae and Haemophilus influenzae are responsible for the disease pneumonia in humans, which infects the alveoli of lungs. A healthy person acquires the infection by inhaling the droplets, released by an infected person or even by sharing utensils with an infected person. Pneumonia vaccine is available these days. It is a second generation vaccine prepared by recombinant DNA technology/genetic engineering

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