Mood swings, increased aggressiveness and reduced fertility in males can be the result of long term abuse of:
 
  • Narcotic analgesics
  • Anabolic steroids
  • Diurectics
  • Cannabinoids
Which of the following drugs has a potent stimulating action on CNS, producing a sense of euphoria and increased energy?
 
  • Cocaine
  • Morphine
  • Barbiturates
  • Benzodiazepines
Identify the incorrect statement regarding HIV/AIDS:
 
  • HIV is a retrovirus
  • HIV can be transmitted from infected mother to her child through placenta
  • The time lag between infection and appearance of AIDS symptoms is 7-10 days
  • HIV destroys helper T lymphocytes
Identify the incorrectly matched pair:
1. Bone marrow Primary lymphoid organ
2. Thymus Increases in size after puberty
3. Payer’s patches Present in small intestine and appendix
4. Spleen Has a large reservoir of RBCs
  • 1
  • 2
  • 3
  • 4
Which of the following will not be an example of passive immunity?
 
  • Foetus receiving antibodies from  their mother, through placenta.
  • Immunity conferred by IgA antibodies present in colostrums.
  • Giving antivenom [containing antibodies against venom] after snake bite
  • A person developing immunity after natural infection by a pathogen
Identify the incorrectly matched pair:
1. Wuchereria Filariasis
2. Streptococcus Pneumonia
3. Rhinovirus Common cold
4. Trichophyton Ringworm
  • 2
  • 3
  • 4
  • 1
Nicotine:
 
  • is a CNS depressant and can cause respiratory depression
  • commonly leads to development of cirrhosis of liver
  • stimulates adrenal gland to release adrenaline and nor-adrenaline
  • is very effective analgesic and sedative
Droplets can be the mode of transmission of pathogens causing all the following diseases except:
  • Ascariasis
  • Pneumonia
  • Common cold   
  • Covid-19
Which of the following conditions can be caused by exposure to allergens?
 
  • Asthma
  • Rheumatoid arthritis
  • Japanese encephalitis
  • Leukaemia
Which diseases given in Column I is not correctly matched with sign and symptoms in Column II?
COLUMN I COLUMN II
1. Filariasis Inflammation and swelling in lower limbs and scrotum
2. Ringworm Internal bleeding, muscular pain, fever and anaemia
3. Amoebiasis Abdominal pain, stools with excess mucous and blood clots
4. Pneumonia Fever, chills, cough, breathing difficulties
  • 1
  • 2
  • 3
  • 4
Which of the following is the correct description of the relation between T cells and B cells?
  • Both are processed in bone marrow and respond to antigen from thymus
  • T cells help B cells produce antibodies
  • B cells increase the phagocytic capabilities of T cells
  • While B cells are involved in first response to an antigen, T cells respond to subsequent encounters with the same antigen
HIV infection can cause life threatening opportunistic infections in humans as it attacks and destroys:
  • Helper T cells
  • Cytotoxic T cells
  • Supressor T cells
  • B cells
Erythroxylum coca, Atropa belladonna and Datura innoxia are plants:
  • that are critically endangered according to IUCN list
  • which have become invasive in Indian ecosystems
  • with hallucinogenic properties
  • found only in the Himalayan region of the Indian subcontinent
The disease Elephantiasis or Filariasis:
 
  • is transmitted by contaminated food and water.
  • is caused by a pathogenic flatworm.
  • causes chronic inflammation of the lymph vessels.
  • causes intestinal obstruction leading to swelling of abdomen, especially in children.
Identify a disease that is caused by an abnormality where the ability of the acquired immune system to distinguish between self and non-self is compromised?
 
  • Creutzfeldt Jakob Disease
  • Rheumatoid arthritis
  • Oculo-cutaneous albinism
  • Diabetes insipidus
Match the pathogens that can cause disease in humans in COLUMN I with their correct biological names in COLUMN II and select the correct match from the codes given:
COLUMN I COLUMN II
a. Filariasis (i) Haemophilus influenza
b. Amoebiasis (ii) Trichophyton
c. Pneumonia (iii) Wuchereria bancrofti
d. Ringworm (iv) Entamoeba histolytica
 
(a) (b) (c) (d)
1. (i) (ii) (iv) (iii)
2. (ii) (iii) (i) (iv)
3. (iv) (i) (iii) (ii)
4. (iii) (iv) (i) (ii)
  • 1
  • 2
  • 3
  • 4
Regarding the stages in the life cycle of Plasmodium:
I. Sporozoite is the infective stage for man
II. In human body it first reproduces asexually in liver cells
III. fertilization takes place in the gut of the mosquito
  • Only I and II are correct
  • Only I and III are correct
  • Only II and III are correct
  • I, II and III are correct
Allergies are hypersentive immune responses that are mediated by the antibodies of the class:
  • IgA
  • IgE
  • IgG
  • IgM
What is incorrect regarding typhoid fever in human beings?
 
  • It is caused by a bacterium
  • The pathogen is transmitted through contaminated food and water
  • It can be confirmed by the Widal test
  • No carrier state is seen in typhoid fever
The malignant tertian malaria is caused by:
 
  • Plasmodium vivax
  • Plasmodium ovale
  • Plasmodium falciparum
  • Plasmodium malariae
Identify the incorrectly matched pair regarding the life cycle of malaria parasite:
1. Sporozoite Infective stage for humans
2. Liver cell Asexual reproduction
3. RBC Sexual reproduction
4. Fertilization In the mosquito gut
  • 1
  • 2
  • 3
  • 4
Match each item in Column I with one in Column II and select the correct match from the codes given:
COLUMN I COLUMN II
A. Dengue and Chikungunya P Aedes mosquito
B. Ringworm Q Microsporum, Epidermophyton and Trichophyton
C. Amoebic dysentery R Wuchereria bancrofti
D. Filariasis S Entamoeba histolytica

Codes
A B C D
1. Q P R S
2. P Q S R
3. R S Q P
4. S R P Q
  • 1
  • 2
  • 3
  • 4
Interferons are:
 
  • proteins secreted by virus infected cells
  • cellular barriers in innate immunity
  • first line of defence against the entry of pathogen into the body
  • secreted in saliva and tears and are bactericidal
Which of the following is incorrect regarding acquired immunity?
 
  • It is a function of lymphocytes
  • It retains memory of previous encounters with pathogens
  • It is non-specific and present since birth
  • It has the ability to distinguish between self and non-self
Which of the following is an example of naturally acquired passive immunity?
 
  • giving anti-venom injection to a person with snake bite
  • passage of IgG class of antibodies through placenta to the foetus and also of IgA class through colostrums
  • giving vaccine produced in recombinant yeast to prevent Hepatitis B
  • a person getting infected by a bacterium and developing antibodies against it
HIV, a retrovirus causing AIDS in humans, cannot be transmitted through:
 
  • sexual contact with infected persons
  • transfusion of contaminated blood and blood products and sharing infected needles
  • placenta from infected mother to her child
  • mere touch or physical contact
The immunodeficiency seen in patients suffering from AIDS is due to the fact that HIV selectively targets and destroys:
 
  • T helper cells
  • Macrophages and Mast cells
  • B cells
  • N K Cells
Cells of a malignant tumour reach distant sites through blood and wherever they get lodged in the body, start a new tumour there. This property is called as:
 
  • Oncogenic transformation
  • Contact inhibition
  • Metastasis
  • Carcinogenesis
In a monovalent antibody molecule:
 
  • there are 4 heavy and two light chains
  • the chains are held together with disulphide bonds
  • an antigen binging site is present between two light chains
  • the light chains have secondary structures and the heavy chains have tertiary structure
B cells:
 
  • are processed in thymus
  • produce antibodies
  • are responsible for graft rejection
  • respond to the pathogen only from the primary lymphoid organs
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Practice Zoology Quiz Questions and Answers