Q149 / 200 · NEET 2006 · Zoology

Earthworms are:

  • Correct answer
    A
    ammonotelic when plenty of water is available
  • B
    ureotelic when plenty of water is available
  • C
    uricotelic when plenty of water is available
  • D
    uricotelic under conditions of water scarcity

Solution

Class Oligochaeta includes terrestrial earthworms and some other species which live in freshwater. Aquatic oligochaetes excrete ammonia, while terrestrial oligochaetes excrete urea. A Caution $\Rightarrow$ Lumbricoides produces both ammonia and urea

Hence, the correct answer is option: 'A'.

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