Which of the following is NOT an example of diffusion?
The spread of perfume in a room
Movement of oxygen from lungs into the blood
Water being pumped up the stem of a plant
Spread of ink in a beaker of water
Related Questions
    Transport proteins of endodermal cells are …A… where a plant adjusts the …B… and …C… of
solutes that reaches the …D…
Choose the correct combination of A-D from the given options
selectively permeable / quantity / type / xylem
impermeable / quantity / type / phloem
fully permeable / size / charge / xylem
selectively permeable / size / charge / cortex
When a molecule moves across a membrane independent of other molecules, the process is called
Uniport
Symport
Antiport
Facilitated diffusion
Movement of molecules takes place along the concentration gradient in
Simple diffusion
Facilitated diffusion
Active transport
Both 1 and 2
Following statements are related with the diffusion of coloured molecules across a membrane. Select the correct statement, which shows the fastest rate of diffusion?
An internal concentration of 15% and external concentration of 10%
An internal concentration of 25% and external concentration of 50%
An internal concentration of 50% and external concentration of 25%
Both (2) and (3) shows fastest rate of diffusion
    Root hair absorb water from the soil on account of
    Turgor pressure
Osmotic pressure
Suction pressure
Root pressure
    What is the value of DPD?
    DPD = TP
DPD = OP – SP
DPD = OP – WP
Equal to wall pressure
Carrier protein, which allows the diffusion of two type of molecules in the same direction is
Symport
Antiport
Both (a) and (b)
Uniport
    Movement of molecules in three forms of matter, from a region higher concentration to a region of lower concentration can be termed as
    Osmosis
Passive transport
Diffusion
Active transport
The real forces responsible for the movement of water from one cell to another cell is mainly
Osmotic pressure
Turgor pressure
Diffusion pressure deficit
Imbibitions
Diffusion is faster in:
Solids
Liquids
Gases
Both solids and liquids