2002 General Studies, all questions

UPSC Prelims 2002 · General Studies

Question 25: Science and Technology

Ticks and mites are actually

aArachnids
bCrustaceans
cInsects
dMyriapods

AnswerThe answer is (a).

Ticks and mites belong to class Arachnida (phylum Arthropoda), with spiders and scorpions. Arachnids have four pairs of legs as adults and no antennae. Ticks and mites are in the order Acari, and many are parasites, ticks feeding on blood. Insects have three pairs of legs and antennae, crustaceans have two pairs of antennae, and myriapods (centipedes, millipedes) have many legs.

Why each option is right or wrong
  • (a) Right: ticks and mites are arachnids (order Acari).
  • (b) Crustaceans such as crabs and prawns have two pairs of antennae.
  • (c) Insects have six legs and antennae.
  • (d) Myriapods are centipedes and millipedes with many legs.

Explanation: written by UPSC Grade, not by UPSC.

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Source: UPSC, Civil Services (Preliminary) Examination 2002, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.