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Substances which are insoluble in a membrane are carried across membrane with concentration gradient by means of a carrier molecule in a process termed as:
a) Diffusion.
b) Osmosis.
c) Active transport.
d) Facilitated diffusion.
ANSWER: D -- FACILITATED DIFFUSION.
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examples on woody perennial Angiosperm species and herbaceous annual angiosperm species. thanks
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Say about thikka desease of ground nut
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