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Earn 100

Osmosis is a special kind of diffusion, in which water diffuses across the cell membrane. The rate and direction of osmosis depends upon
(a)Pressure gradient.
(b)Concentration gradient.
(c)Both (1) and (2).
(d)None of these.

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Important Questions on Transport in Plants
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Mitochondria and chloroplast are:
(i) Semi - autonomous organelles
(ii) Formed by the division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following option is correct?

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Assertion (): The flow of solvent molecules from a pure solvent to the solution through semipermeable membrane is osmosis.
Reason Pure solvent molecules flow out of the solution through semipermeable membrane if a pressure larger than the osmotic pressure is applied to the solution side.
The correct answer is:

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Column I | Column II | ||
A | Thylakoids | (i) | Disc-shaped sacs in Golgi apparatus |
B | Cristae | (ii) | Condensed structure of DNA |
C | Cisternae | (iii) | Flat membranous sacs in stroma |
D | Chromatin | (iv) | Infoldings in mitochondria |

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