CBSE
Multiple Choice QuestionsWater vapour comes out from the plant leaf through stomatal opening. through the same stomatal opening. carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using the following options
Both processes can happen together because the diffusion coefficient of water and CO2 is different
The above processes happen only during night time
One process occurs during day time and other at night
One process occurs during day time and other at night
Roots play insignificant role in absorption of water in
Sunflower
Pistia
Pea
Pea
A protoplast is a cell
without plasma membrane
without nucleus
undergoing division
undergoing division
Root pressure develops due to
active absorption
low osmotic potential in soil
passive absorption
passive absorption
Transpiration and root pressure cause water to rise in plant by?
pulling it upward
pulling and pushing it, respectively
pulling it upward
pulling it upward
Tracheids differ from other treachery elements
having Casparian strips
being imperforate
lacking nucleus
lacking nucleus
Which one of the following is correctly matched?
Passive transport of nutrients - ATP
Apoplast - Plasmodesmata
Potassium-Readily mobilization
Potassium-Readily immobilization
A column of water within xylem vessels of tall trees does not break under its weight because of
Dissolved sugars in water
Tensile strength of water
Lignification of xylem vessels
Lignification of xylem vessels
Which of the following criteria dows not pertain to facilitate transport?
Requirement of special membrane proteins
High selectivity
Transport saturation
Transport saturation
Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs
as bicarbonate ion
in the form of dissolved gas molecules
by binding to RBC
by binding to RBC
