Plant and Water Relations (Class XII)
Description: Proteins | |
Number of Questions: 20 | |
Created by: Arav Srivastava | |
Tags: osmosis diffusion imbibition permeability Water Absorption Absorption of Water by Plants Ascent of Sap Absorbtion in Roots Chemical and Water Potential Water Potential in Plants Osmosis |
In a strawberry leaf, what is the neat droplet at the tip of every tooth of a leaf edge?
Which of the following types of plants exhibit xeromorphy?
What is the motive force for nyctinastic movement of leaves of mimosa pudica?
Who among the following proposed a law relating osmotic pressure to solute concentration?
Which of the following scientists considered root pressure as an active process responsible for guttation and bleeding?
Which of the following statements is true?
Which of the following statements is false?
In which group of plants is root pressure absent?
Who proposed the relay pump theory of ascent of sap?
What are the plants like eastern cottonwood which draw water from water table called?
Where does root pressure develop?
The pressure which is required in the opposite direction so as to stop the entry of water molecules across a semipermeable membrane is called
What happens when a freshwater plant is transferred to marine water?
Two cells A and B are placed adjacent to each other. Cell A has an osmotic potential (psi) of -16 bars and a pressure potential (p) of 10 bars whereas cell B has an osmotic potential (psi) of -14 bars and a pressure potential (p) of 4 bars. What will be the flow of water in the cells?
In which of the following pathways does water move through protoplasts connected by plasmodesmata?
Which of the following is/are viewed as the optimal condition(s) for plant growth and microbial activity?
Which of the following factors drives the flow of water through plant and soil?
a. Hydrostatic pressure b. Water potential c. Diffusion d. All of the above
According to which theory does ascent of sap take place due to rhythmic change in the osmotic pressure of living cells of xylem?
Which of the following factors is inversely proportional to the rate of diffusion?
How does the division of xylem into many small vessel pipes help in ascent of sap in xylem?