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  1. Deficiency symptoms of nitrogen and potassium are visible first in:
  2. Third generation pesticide is
  3. Which of the following blood vessels in circulatory system of frog has more deoxygenated blood?
  4. A small aquatic herb in which a portion of leaf forms a tiny sac or bladder
  5. The structures that help some bacteria to attach to rocks and / or host tissues are: