Question

Correct sequential steps of Malaria spread-

• [(K)] Infected female Anopheles bites a healthy human.

• [(L)] Parasite invades the liver.

• [(M)] Fever, Shivering and feeling cold.

• [(N)] Parasite invades the red blood cells.

• [(O)] New mosquito gets infected by blood of patient.
Choose the correct option-

• A. $ \text{K} \rightarrow \text{M} \rightarrow \text{L} \rightarrow \text{N} \rightarrow \text{O} $
• B. $ \text{K} \rightarrow \text{N} \rightarrow \text{M} \rightarrow \text{L} \rightarrow \text{O} $
• C. $ \text{K} \rightarrow \text{L} \rightarrow \text{N} \rightarrow \text{M} \rightarrow \text{O} $
• D. $ \text{K} \rightarrow \text{L} \rightarrow \text{M} \rightarrow \text{N} \rightarrow \text{O} $

Hint:

Malaria flow: Mosquito bite → Liver → RBC → Symptoms → New mosquito.

Answer 1

The Correct Option is C

Step 1: Identify the stages.
We must order the malaria cycle: (K) infected mosquito bites human, (L) parasite invades liver, (M) fever and chills, (N) parasite invades red blood cells, (O) new mosquito gets infected.
Step 2: Find the starting event.
The cycle begins when an infected female Anopheles bites a human and injects sporozoites, so K is first.
Step 3: Locate the liver stage.
The sporozoites first travel to the liver and multiply there, so L comes next.
Step 4: Locate the blood stage.
From the liver the merozoites enter red blood cells, so N follows L.
Step 5: Locate the symptom stage.
When the infected red cells burst, the released toxins trigger fever and chills, so M comes after N.
Step 6: Close the cycle.
Finally a new mosquito biting the patient gets infected, O, giving $\text{K} \rightarrow \text{L} \rightarrow \text{N} \rightarrow \text{M} \rightarrow \text{O}$, option C.
\[ \boxed{\text{K} \rightarrow \text{L} \rightarrow \text{N} \rightarrow \text{M} \rightarrow \text{O}} \]