Tag: transport of water and minerals

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Multiple choice biology transport in plant transport of water and minerals conduction of water and minerals absorption of water and minerals in plants

Osmotic potential and pressure potential of three cells, a, b, c located in different parts of an actively transpiring plant are: 

Cell O.P (MPa) P.P. (MPa)
a -0.87 0.44
b -0.92 0.34
c -0.68 0.27

Which ones are root hair, root cortical and mesophyll cells respectively?

  1. a, b, c

  2. a, c, b

  3. c, a, b

  4. b, c, a
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Osmosis occurs only through the semi-permeable membrane. Osmosis is a gradient dependent process, osmosis is different from diffusion as it is characterized by a semi-permeable membrane.
  • Net direction and rate of osmosis depend on both pressure gradient and concentration gradient.
So, the correct answer is 'c, a, b'.

Multiple choice biology transport in plant transport of water and minerals conduction of water and minerals absorption of water and minerals in plants

Water absorbed by the roots reaches the leaves and is used in producing food for the entire plant.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The leaves prepare food for the plant, using water and carbon dioxide during photosynthesis. The roots have root hair. The roots hair increase the surface area of the root for the absorption of water and mineral nutrients dissolved in the water.