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the blockage of phloem
the blockage of xylem
both (a ) and (b )
increased transpiration
Wood is the main raw material for the manufacture of
Wood Spirit is which of the following ?
X-rays cannot pass through
Xenobiotics which are inherently resistant to microbial attack are called as
Yeasts moulds are examples of
Zener- diode is used as :
Zinc sulphide is commonly used as
ZnSO,4⋅7H2O is the chemical formula of which substance ?
_ is not an example of refraction of light.
_ was the inventor of cosmic rays.