1. Tardigrade
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  3. Biology
  4. Primary root is (1) positively geotropic (2) positive hydrotropic (3) negative geotropic (4) negative hydrotropic

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Q. Primary root is (1) positively geotropic (2) positive hydrotropic (3) negative geotropic (4) negative hydrotropic

BHUBHU 2008

Solution:

Primary roots develop directly through elongation of the radicle of embryo and persist throughout the life of the plant. These are generally non-green underground positively geotropic, positively hydrotropic and often negatively phototropic organ of the plant body.