Difference between Active and Passive Water Absorption – Comparison Table


Active vs Passive Absorption of Water

Active vs Passive Water Absorption
(Difference between Active and Passive Absorption of Water in Plants)

Plants absorb water along with minerals from the soil through root by a process called ‘absorption of water’. Based on the involvement of metabolic energy, the water absorption process in plants may be of two types – (1) Active absorption and (2) Passive absorption.

Active absorption: It is the absorption of water, usually against the concentration gradient, by the utilization of metabolic energy (energy from ATP).

Passive absorption: Absorption of water without the utilization of metabolic energy.

 

Apoplast vs Symplast

image source: wikipedia

The present post discusses the Difference between Active and Passive water absorption process in plants with a comparison table.

Continue reading

Difference between Simple Diffusion and Facilitated Diffusion: A Comparison Table


Difference between Simple and Facilitated Diffusion

Simple Diffusion vs Facilitated Diffusion
(Difference between Simple and Facilitated Diffusion)

Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration. Based on the presence or absence of facilitator molecules, there are two types of diffusion processes. They are (1) Simple Diffusion and (2) Facilitated Diffusion.

(1). Simple Diffusion: Here the diffusion occurs without the aid of an intermediary molecule such as channel proteins or carrier molecules.

(2). Facilitated Diffusion: Facilitated diffusion is the process of spontaneous transport of molecules or ions across a cell’s membrane via specific trans-membrane proteins.

Difference Simple and Facilitated Diffusion

The present post discusses the Difference between the Simple and Facilitated Diffusion Process.

Difference between Simple Diffusion and Facilitated Diffusion

Continue reading

Difference between Diffusion and Osmosis: A Comparison Table


Difference between Osmosis and Diffusion

Diffusion vs Osmosis
(Difference between Diffusion and Osmosis)

Diffusion and Osmosis are the two methods in membrane transport by which the movement of materials in and out of the cell takes places.

Diffusion: Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration. Example: When a scent-bottle is opened in a room, quickly the fragrance will spread to the entire room by diffusion of the molecules through the air.

Diffusion Example

Osmosis: Osmosis is a type of diffusion in which the solvent molecules move into the solution through a semi-permeable membrane. Example: Plasmolysis of a cell when it is placed in a sugar or salt solution.

Continue reading

Difference between Transpiration and Guttation – A Comparison Table


Transpiration vs Guttation

Transpiration vs Guttation (A Comparison Table)
(Similarities and Differences between Transpiration and Guttation Process)

Transpiration and Guttation are the two physiological events in plants by which the plants release water to the external atmosphere.

Transpiration: Transpiration is the excessive loss of water from the aerial portion of plants as water vapours. Even though the transpiration results in excessive loss of water, it helps to maintain the continuous absorption water from the soil through a force called the ‘Transpiration Pull’. Thus, the transpiration is considered as a ‘Necessary Evil’ in plants.

Guttation: Guttation is the process of secretion of liquid water through the leaf tips in some plants. These plants possess a specialized structure at their leaf tip and margins called Hydathodes. The guttation usually occurs in the morning time when the atmosphere humidity will be high and the rate of transpiration will be low.

Similarities between Transpiration and Guttation

Ø  Both transpiration and guttation primarily occurs though leaf.

Ø  In both cases, the water is lost through specialized pores.

Ø  Both transpiration and guttation cause permanent water loss from the plant.

Difference between Transpiration and Guttation

Continue reading