SAT - Science - Biology - Transportation

Question - 1

Pea seeds absorb more water as compared to paddy and swell up more because

  • A Proteins in pea absorb more water
  • B Hard coat of paddy prevents water absorption
  • C Wall of paddy is impermeable to water
  • D Osmotic potential of pea seeds is more than that of paddy

Question - 2

 The process of taking CO2 (or) O2 by the leaves is

  • A Exosmosis
  • B Endosmosis
  • C Transpiration
  • D Diffusion

Question - 3

Turgor pressure is also referred to as

  • A Solute potential
  • B Water potential
  • C Pressure potential
  • D Osmotic potential

Question - 4

Capillary forces will lift water ______ in a glass tube equal to the diameter of a xylem element

  • A 1.4 meters
  • B 8.3 meters
  • C 5.6 meters
  • D Less than one meter

Question - 5

In plants, water rises beyond the point supported by the atmospheric pressure mostly because of

  • A Capillarity
  • B Gravity
  • C Evaporation
  • D Active transport

Question - 6

In the absence of transpiration water moves into and up xylem because of

  • A Root pressure
  • B Turgor pressure
  • C Evaporation
  • D Guttation

Question - 7

High root pressure can cause water to be lost by leaves through the process of

  • A Respiration
  • B Transpiration
  • C Guttation
  • D Translocation

Question - 8

Water potential is the

  • A combination of turgor pressure and pressure potential
  • B difference between pressure and osmotic potential
  • C combination of pressure potential and solute potential
  • D product of pressure potential and osmotic potential

Question - 9

Specific ions are acquired by root hairs by the process of

  • A Osmosis
  • B Active transport
  • C Reverse osmosis
  • D Simple diffusion

Question - 10

About ______% of water taken in by roots is lost by transpiration.

  • A 100
  • B 90
  • C 80
  • D 60
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