Question:
Which of the following statements are correct in relation to host & parasites?
Statements:
(i) The host in which parasite undergoes asexual reproduction is secondary host.
(ii) Female Culex mosquito is the primary host for Wuchereria.
(iii) In primary host parasite undergoes sexual reproduction.
(iv) Man is the primary host for Plasmodium.
(v) The host that lodges the infective stages of a parasite in its body when the main host is not available is called reservoir host.
Which of the following statements are correct in relation to host & parasites?
Statements:
(i) The host in which parasite undergoes asexual reproduction is secondary host.
(ii) Female Culex mosquito is the primary host for Wuchereria.
(iii) In primary host parasite undergoes sexual reproduction.
(iv) Man is the primary host for Plasmodium.
(v) The host that lodges the infective stages of a parasite in its body when the main host is not available is called reservoir host.
Statements:
(i) The host in which parasite undergoes asexual reproduction is secondary host.
(ii) Female Culex mosquito is the primary host for Wuchereria.
(iii) In primary host parasite undergoes sexual reproduction.
(iv) Man is the primary host for Plasmodium.
(v) The host that lodges the infective stages of a parasite in its body when the main host is not available is called reservoir host.
Show Hint
Definitive host = sexual reproduction; Intermediate host = asexual reproduction.
Updated On: Jun 20, 2026
- Only (i), (iii) and (v) are correct, (ii) and (iv) are wrong
- Only (i), (iii) and (v) are correct, (ii) and (iv) are wrong
- Only (iii) and (v) are correct, (i), (ii) and (iv) are wrong
- Only (ii) and (iv) are correct, remaining are wrong
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding host-parasite relationships.
Parasites require different hosts for completing their life cycle, mainly classified as primary (definitive) and secondary (intermediate) hosts depending on reproduction.
Step 2: Evaluating statement (i).
The host where a parasite undergoes asexual reproduction is called the intermediate host, not the secondary host. Hence, statement (i) is incorrect.
Step 3: Evaluating statement (ii).
In Wuchereria bancrofti, the female Culex mosquito acts as the intermediate host, while humans are the definitive host. Therefore, statement (ii) is incorrect.
Step 4: Evaluating statement (iii).
Sexual reproduction of parasites generally occurs in the primary (definitive) host. Hence, statement (iii) is correct.
Step 5: Evaluating statement (iv).
In Plasmodium, sexual reproduction occurs in the female Anopheles mosquito, not in humans. Therefore, humans are not the primary host. So statement (iv) is incorrect.
Step 6: Evaluating statement (v).
A reservoir host is one that carries infective stages of a parasite when the main host is unavailable, making statement (v) correct.
Step 7: Final conclusion.
Only statements (iii) and (v) are correct, while (i), (ii), and (iv) are incorrect.
Parasites require different hosts for completing their life cycle, mainly classified as primary (definitive) and secondary (intermediate) hosts depending on reproduction.
Step 2: Evaluating statement (i).
The host where a parasite undergoes asexual reproduction is called the intermediate host, not the secondary host. Hence, statement (i) is incorrect.
Step 3: Evaluating statement (ii).
In Wuchereria bancrofti, the female Culex mosquito acts as the intermediate host, while humans are the definitive host. Therefore, statement (ii) is incorrect.
Step 4: Evaluating statement (iii).
Sexual reproduction of parasites generally occurs in the primary (definitive) host. Hence, statement (iii) is correct.
Step 5: Evaluating statement (iv).
In Plasmodium, sexual reproduction occurs in the female Anopheles mosquito, not in humans. Therefore, humans are not the primary host. So statement (iv) is incorrect.
Step 6: Evaluating statement (v).
A reservoir host is one that carries infective stages of a parasite when the main host is unavailable, making statement (v) correct.
Step 7: Final conclusion.
Only statements (iii) and (v) are correct, while (i), (ii), and (iv) are incorrect.
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