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Biology · ANIMAL KINGDOM

हिन्दी

Which set of physiological and structural traits correctly characterizes members of Phylum Arthropoda?

  1. Closed circulatory system, chitinous exoskeleton, and nephridial excretion
  2. Open circulatory system, malpighian tubules for excretion, and statocysts for balance
  3. Pseudocoelomate body plan, jointed appendages, and tracheal respiration only
  4. Radial symmetry in adults, chitinous shell, and flame cells for osmoregulation

Correct answer · Option 2

Open circulatory system, malpighian tubules for excretion, and statocysts for balance

Explanation

Arthropods possess an open circulatory system, excretion via Malpighian tubules, chitinous exoskeleton, coelomate body cavity, jointed appendages, and sensory statocysts/balancing organs.

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