UPSC Prelims 2001 · General Studies
Question 132: Science and Technology
Consider the following statements: I. Tapeworm is a hermaphrodite. II. Round-worm has separate sexes. III. Filaria is caused by a nematode. IV. Guinea worm is an annelid. Which of these are correct?
AnswerThe answer is (b).
Statements I, II and III are correct. Tapeworms are hermaphrodite flatworms with both male and female organs, round-worms (nematodes) have separate sexes, and filaria is caused by the nematode Wuchereria bancrofti, spread by mosquitoes. Statement IV is wrong: the guinea worm (Dracunculus) is also a nematode, not an annelid. Annelids include earthworms and leeches.
- I. Tapeworm is a hermaphrodite.
- II. Round-worms have separate sexes.
- III. Filaria is caused by a nematode.
- IV. Guinea worm is a nematode, not an annelid.
Why each option is right or wrong
- (a) III is also correct.
- (b) Right: I, II and III.
- (c) IV is wrong, and I and II are left out.
- (d) IV is wrong, and I is left out.
Explanation: written by UPSC Grade, not by UPSC.
Source: UPSC, Civil Services (Preliminary) Examination 2001, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.