In animals like Annelids, Molluscs, organs have associated to form functional systems, each system concerned with a specific physiological function. This pattern is called ________ system level of organization.
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Why do the desert plants take up the carbon dioxide for photosynthesis at night?
The hardest part of the body is ______.
Ethylene is a ______ molecule.
___________ being a higher category, is the assemblage of families which exhibit a few similar characters.
In which part of the cell are proteins made?
A healthy adult man has, on an average, ________ (in millions) of RBCs mm-3 of blood.
Lacrymal glands are situated in the