Transportation in Plants
Transportation in Plants: Overview
This topic covers concepts, such as Transportation in Plants, Xylem, Phloem, Sieve Tubes, Comparison of Xylem and Phloem, Transport of Water in Plants, Diffusion, Facilitated Diffusion, Antiport Diffusion, Uniport Diffusion, Symport Diffusion, Factors Affecting Diffusion, Osmosis, Endosmosis, Exosmosis, Turgor Pressure, Wall Pressure, Factors Affecting Osmotic Pressure, Active Transport in Plants, Plant Water Relation, Water Potential, Solute Potential, Pressure Potential, Imbibition, Plasmolysis, Absorption of Water, Water Transport through Xylem, Apoplast, Symplast, Long Distance Transport of Water, Stomata, Guard Cell, Subsidiary Cells, Transpiration, Stomatal Transpiration, Cuticular Transpiration, Lenticular Transpiration, Application of Transpiration, Guttation, Relationship between Transpiration and Photosynthesis, Factors Affecting Transpiration, Significance of Transpiration, Absorption of Mineral Nutrients, Passive Absorption of Minerals, Phloem Sap, Active Absorption, Carrier Concept, Ascent of Sap, Phloem Loading, Bidirectional Flow & Mass Flow Hypothesis etc.
Important Questions on Transportation in Plants
Food synthesized in leave is transported by
Choose the most appropriate statement from the options listed below that explains the factors which affects transpiration:
(A) If the wind blows faster, the water vapour released during transpiration is faster.
(B) Increase in atmospheric pressure increases the rate of transpiration.
(C) Decrease in temperature allows more water to evaporate.
(D) High humidity in the air increases the rate of transpiration.
Root pressure is effective way transporting water in xylem. This pressure is generated
Absorption of water is associated with
Which of the following is not the purpose of transpiration?
The xylem in plants are responsible for
Entry of water into root hairs is an example of –
Plants absorb water through its roots, stems and leaves. But, mainly water is absorbed by root hairs. These hair roots absorb water, when:
In plants "Auxin” is used for
(a) division of cells
(b) ripening of fruits
(c) root growth inhibition
(d) elongation and division of cells
Which molecules are present in higher concentration in photosystem II than in photosystem I?
Stomata: Transpiration :: Hydathode:
The most acceptable mechanism of phloem translocation is
Loss of water in the form of vapour during transpiration occurs through
When a cell is fully turgid which of the following will be zero?
Ornithophilous flowers are pollinated by
Pollination of flowers by ants is called
A cell is plasmolysed after being kept in a hypertonic solution. What will be present between the cell wall and plasmalemma?
The stomata in angiosperms open and close due to
