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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2020 · Paper I, General Studies · Q100 of 120

Geo-Scientist Prelims 2020 General Studies Q100: Which one of the following is correct with regards to animals with…

QuestionZoology / body plan

Which one of the following is correct with regards to animals with bilateral symmetry, triploblastic body and true body cavity?

  1. (a) Roundworm, earthworm and leech
  2. (b) Earthworm, leech and nereis
  3. (c) Ascaris, round worm and earthworm
  4. (d) Earthworm, sea cucumber and sea urchin

Answer: (b) Earthworm, leech and nereis

Bilateral, triploblastic, true coelom = coelomates. Annelids: earthworm, leech, Nereis → (b). Roundworms/Ascaris are pseudocoelomates; sea cucumber and sea urchin are echinoderms with radial symmetry in adults.

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