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NEET 2009
Exam
NEET
Year
2009
Subject
Zoology
Chapter
Structural Organisation in Animals

NEET 2009 · Zoology · Structural Organisation in Animals

If a live earthworm is pricked with a needle on its outer surface...

If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is

Options

  1. Aexcretory fluid
  2. Bcoelomic fluid
  3. Chaemolymph
  4. Dslimy mucus

Correct answer

B. coelomic fluid

Step-by-step solution

The body cavity of earthworm is true coelom (schizocoel) as it is formed by the division of mesoderm. The coelom is filled with milky, alkaline coelomic fluid, which contains different types of corpuscles. Thus, if alive earthworm is prickled with a needle on its outer surface, the coelomic fluid will come out.
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