मराठी

The Chemical Substance Mainly Responsible for Tooth Disorders is - Biology

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प्रश्न

The chemical substance mainly responsible for tooth disorders is 

पर्याय

  • Calcium

  •  Chloride 

  • Fluorides 

  •  Iodides 

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उत्तर

 Fluorides

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Vector Borne Diseases
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पाठ 15: Hygiene - [A Key to Healthy Life] - Multiple choice type [पृष्ठ १५५]

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सेलिना Concise Biology [English] Class 9 ICSE
पाठ 15 Hygiene - [A Key to Healthy Life]
Multiple choice type | Q 4 | पृष्ठ १५५

संबंधित प्रश्‍न

Put a tick mark (✓) against the correct alternative in the following statement: 

Which one of the following vitamin deficiency diseases can be cured by eating a diet which includes carrot, yellow fruits, vegetables, butter, milk, fish ?

  1. Beri-beri
  2. Dermatitis
  3. Night blindness
  4. Scurvy  

A disease caused due to Plasmodium


 Write short (2-3 sentences) note on vector.  


 Which of the following statement are true (T) and which ones are false (F)? Mark T or F: 

Malaria is a vector-borne disease.  


Match Column I with that Which is Most Appropriate in Column II.

Column I Column II
(a) Mosquito (i) DDT
(b) Plasmodium (ii) Dengue
(c) Entamoeba histolytica (iii) Vector
(d) Aedes mosquito (iv) Malaria
(e) Insecticide  (v) Dysentery

Fill in the blank:
The causative agent of malaria is a _______.


One of the means of indirect transmission of a disease is ______.


What is the mode of transmission of dengue?


______ mosquitoes also transmit Chikungunya and Yellow fever.


Filaria is transmitted by the bite of an infected Culex mosquito.


Malaria is caused by the fungal parasite plasmodium.


Assertion: Chikungunya is transmitted in humans by the bite of an infected Aedes aegypti mosquito during the daytime.
Reason: Chikungunya is caused by Rotavirus.


Discuss the strategies to adopt to prevent diseases transmitted through mosquitoes.


Name the causative agent of typhoid in humans. How does the pathogen gain entry into the human body? Write the diagnostic symptoms and mention the organ that is affected in severe cases.


The infectious stage of Plasmodium that enters the human body is ______.


Observe the following set of symptoms given below:

  1. Frontal headache
  2. Liver enlargement
  3. Bleeding gums
  4. Excessive pain in the body
  5. Pain behind the eyes
  6. Rupture of veins in kidneys

To which of the following type of diseases do these symptoms belong?


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