Tag: zoology

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Questions Related to zoology

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Simple goitre can be prevented by using iodised salt in food.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Simple goitre is caused due to the lack of iodine in the diet which causes hypothyroidism. It is a deficiency disease and is easily reversible by a proper intake of iodine. Iodine helps in the synthesis of thyroxine hormone. Due to the above-stated reasons, the answer is true.

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Which of the following is an infectious disease?

  1. Coronary thrombosis

  2. Cancer

  3. Diabetes mellitus

  4. Diptheria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Infectious diseases are those diseases which are caused by microorganisms like fungi, bacteria, virus, parasites. 
  • Diphtheria is an infectious disease caused by the bacterium Corynebacterium diphtheria. It affects the mucous membrane of the throat and upper respiratory tract. Coronary thrombosis is caused due to accumulation of cholesterol in the walls of arteries. 
  • Cancer is caused by mutation, radiation, etc. Diabetes mellitus is caused by insufficient production of insulin.

Thus, the correct answer is 'Diphtheria.'

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Read the given statement and select the option that correctly identifies true (T) and false (F) ones
(i) Hepatitis virus primarily affects the liver.
(ii) Grave's disease occurs due to hyposecretion of thyroid hormones 
(iii) Cheilosis occurs due to defficiency of vitamin B
(iv) Tuberculosis is a bacterial disease whereas anthrax is a viral disease.

  1. (i) - T,(ii) -F,(iii)-T,(iv)-F

  2. (i) - T,(ii) - T,(iii)- F,(iv)-F

  3. (i) - T,(ii) -F,(iii)-F,(iv)-F

  4. (i) - T,(ii) -T,(iii)-F,(iv)-T
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(i) Hepatitis primarily affects liver - true

(ii) Grave's disease is caused by hyposectretion of thyroid hormones, because Grave's disease is caused by hypersectretion of thyroid hormones
(iii) cheilosis is initiated by Vitamin B deficiency - true
(iv) tuberculosis is a bacterial disease  whereas  anthrax is a viral disease -false becasue tuberculosis and anthrax are caused by bacteria 
So, the correct option '(i)-T (ii)-F, (iii)-T, (iv) - F'.

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Select the infectious disease among the following.

  1. Diabetics

  2. Allergy

  3. Influenza

  4. Arthritis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Infectious diseases are those that can spread from a diseased person to a healthy person. They are also called communicable diseases. 

A. Diabetes is a non-infectious disease. 
B. Allergy does not spread from an allergic to a non-allergic person.
C. Influenza is caused by a pathogen called Flu Virus. It is an infectious disease.
D. Arthritis is an auto-immune disease. It is non-infectious.
Hence, the correct answer is 'Influenza'

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Jaundice is a/an.

  1. Disease Caused by Protozoans

  2. Non-Communicable disease

  3. Infectious disease

  4. Bacterial disease in human
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Jaundice is a non-communicable infectious disease that is caused due to excessive secretion of bilirubin, that is not completely filtered by the blood. It is mostly caused due to Hepatitis virus, that infects the hepatic system.


So, the correct answer is 'Non-Communicable disease'.

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Toxins (saxitoxins) secreted by some dinoflagellates enter the body of human beings through food chain and result in

  1. Madness

  2. Paralysis

  3. Syphilis

  4. Plague
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Genus Alexandreum of dinoflagellates secretes neurotoxin saxitoxins which are the causative agents of paralytic shellfish poisoning (PSP). Molluscs such as mussels and clams feed on a large number of dinoflagellates, human consumption of those molluscs causes paralysis. 

Madness is a characteristic symptom of rabies which is caused by RNA virus “rabies virus” and is mostly spread through the bite of an infected dog. 
Syphilis is a sexually transmitted disease, caused by gram negative spirochete, Treponema pallidum. 
Plague is caused by gram negative rod shaped bacteria. Yersinia pestis and is characterised by flu-like symptoms. It is transmitted by bites from infected fleas. So, the correct answer is option B.

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Mad cow disease caused by a

  1. Bacterium

  2. Prion

  3. Worm

  4. Virus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The causative agent of mad-cow disease is a prion. Bovine spongiform encephalopathy (BSE), commonly known as mad cow disease, is a fatal neurodegenerative disease or encephalopathy in cattle that causes a spongy degeneration in the brain and spinal cord. It is caused due to a prion. A prion is an infectious agent, specifically a protein in a misfolded form. The protein itself, whether in its misfolded or its correctly folded form, can be referred to as the prion protein (PrP). A protein as an infectious agent stands in contrast to all other known infectious agents, like viruses, bacteria, fungi, or parasitesall of which must contain nucleic acids.

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Deficiency of folic acid the leads to a reduction in the number of leucocytes. This condition is called

  1. Leukaemia

  2. Leucopenia

  3. Polycythemia

  4. Tay-sac disease
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Leukaemia is blood cancer.
Polycythemia is an abnormally increased concentration of hemoglobin in the blood.
Tay-sachs disease is hexosaminidase A deficiency.
Leucopenia is a reduction in the number of white blood cells (leucocytes) caused by the deficiency of folic acid.
Therefore, the correct answer is option B.