Read the following sentences and choose the correct sentences:
$1.$ Dysentery,plague,and diphtheria are caused by bacteria.
$2.$ $Salmonella$ $typhi$ directly affects the respiratory system.
$3.$ Amoebiasis and Ascariasis are caused by contaminated water.
$4.$ Internal bleeding,anemia,and muscular pain are symptoms of elephantiasis.

  • A
    $2$ and $4$
  • B
    $1$ and $3$
  • C
    $3$ and $4$
  • D
    $1$ and $2$

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Select the correct option for the plant shown below.

Assertion $(A):$ In Pneumonia and common cold, close contact with an infected person should be avoided.
Reason $(R):$ Pneumonia and common cold are airborne diseases.

$A$: Antibiotics like penicillin can be used to treat common cold.
$R$: Penicillin causes lysis of viral cells.

Which of the following is an incorrect match?

Identify the given chemical structures and select the correct option.

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