Movement of Water, Minerals,Food and Gases
Movement of Water, Minerals,Food and Gases: Overview
This topic covers concepts such as Phloem, Root Pressure, Osmosis, Endosmosis, Exosmosis, Osmotic Pressure, Active Transport in Plants, Diffusion, Absorption of Water, Water Transport through Xylem, Ascent of Sap, etc.
Important Questions on Movement of Water, Minerals,Food and Gases
The normal roots of the mangrove plants are unable to breathe in the marshy saline soil. They have additional negatively geotropic roots to help in gaseous exchange. What are these roots called?
Xylem sap is made up of
Which tissue is responsible for upward movement of the water during the ascent of sap in the plant?
Transpiration pull theory is considered best to explain the ascent of sap.
Fill in the blank with the correct option provided in the bracket.
Cohesion-tension theory is also known as _____. (root pressure theory/ capillary theory/ transpiration pull theory)
The ascent of sap is the active process and required energy expenditure by the plant.
Water moves up against gravity and even for a tree of 20m height, the tip receives water within two hours. Which is the most important physiological phenomenon which is responsible for the upward movement of water, whether it is Transpiration pull or Root pressure?
Which of the following is not take part in the ascent of sap through the xylem in tall plants?
What will happen, if a plant cell is kept under hypertonic solution?
Fill in the blank with the correct option from the bracket.
Thistle funnel experiment demonstrates the method of _____. (diffusion, imbibition, osmosis, adsorption)
Fill in the blank with the correct option from the bracket.
Osmosis means the diffusion of _____ molecules from their higher concentration to their lower concentration. (solute, sugar, solvent)
The vaporisation of water vapour in the atmosphere is an example of osmosis.
The diffusion of a substance in a system is influenced by the concentration of other substances in that system.
Fill in the blank with the correct option from the bracket.
A flowering plant is planted in an earthen pot and irrigated. Urea is added to make the plant grow faster, but after some time the plant dies. This may be due to an osmotic process called_____. (endosmosis, exosmosis, reverse osmosis)
Plants absorb water from the soil and transmit it to various organs by_____
In an experiment on osmosis, if external pressure is applied to a dilute solution, less water will pass into the concentrated solution.
The most appropriate characteristic of a semipermeable membrane is that
Name the following:
The process by which water enters root hairs.
Identify the correct statements regarding osmotic pressure from the following options given.
_____ of a solution is a measure of its tendency to take in water by osmosis.
