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Lungs have evolved in higher organisms because they provide a more efficient means of gas exchange compared to skin. Lungs offer a greater surface area and a more controlled environment for oxygen and carbon dioxide exchange, which is essential for meeting the metabolic demands of larger and more active animals. Skin-based respiration is limited by factors such as surface area and moisture retention, making it less effective for sustaining the higher oxygen needs of complex organisms. Additionally, lungs allow for the regulation of gas exchange and protection against environmental factors.
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What happens in gaseous exchange?
The diffusion of gases takes place from their higher concentration to lower concentration. Exchange of oxygen by carbondioxide is the usual feature of breathing by lungs.
How does gaseous exchange take place in the lower plants?
In lower plants such as mosses and liverworts, gaseous exchange occurs through simple diffusion across the cell membranes. These plants lack specialized structures like stomata found in higher plants, so gases enter and exit the plant cells directly through their surfaces. This process is limited by the surface area available for exchange, making lower plants reliant on moist environments for efficient gaseous exchange.
The production of ammonia from gaseous hydrogen and gaseous nitrogen will what at a higher temperature?
The production of ammonia from gaseous hydrogen and gaseous nitrogen will increase at a higher temperature. This is because the reaction is endothermic, meaning it requires heat to proceed. Higher temperatures provide the necessary energy for the reaction to occur more rapidly.
Why have lungs replaced skin for gaseous exchange?
Lungs have evolved to replace skin for gas exchange because they are more efficient at extracting oxygen from the air and eliminating carbon dioxide from the body. Lungs have a larger surface area, thanks to the branching structure of the respiratory system, allowing for more effective exchange of gases between air and blood. This specialized design enables a higher rate of gas exchange compared to skin, making it better suited for efficient respiration in terrestrial animals.
Why are there more unicellular organisms than multicellular organisms?
Unicellular organisms are simpler in structure and can replicate more rapidly than multicellular organisms, allowing them to adapt quickly to different environments. Additionally, unicellular organisms have a higher surface area-to-volume ratio, which is more efficient for nutrient exchange. This efficiency in resource utilization may contribute to the abundance of unicellular organisms compared to multicellular organisms.
What is the important of soil colloids in soil fertility?
Soil colloids have large surface areas which can be used as sights for cation exchange, increasing the soils cation exchange capacity. The higher the cation exchange capacity in a soil, the more the soil is able to retain nutrients because the cations are suspended in the soil and are then able to be used by organisms in the soil.
What does gaseous mean?
Gaseous refers to a state of matter in which a substance exists as a gas, characterized by molecules that are free to move and have no definite volume or shape. Gaseous substances can fill the space available to them and are often found at higher temperatures.
What is the functions of the Colombo stock exchange?
The main function of the Colombo Stock Exchange is to exchange precious materials and supplies to others for interest and higher prices. This is how Stock Exchange makes money.
What is the function of the Colombo Stock Exchange?
The main function of the Colombo Stock Exchange is to exchange precious materials and supplies to others for interest and higher prices. This is how Stock Exchange makes money.
What Under the feudal system's higher noble granted land to a lower noble in exchange for?
It was in exchange for an oath of loyalty.
What is the significance of foreign exchange rate risk and how can it be mitigated?
Foreign exchange rate means that 1 usd = 10 pesos. When you exchange currency, understand that it fluctuates, sometimes higher and sometimes lower. Do your trading when it's higher b\c you get more of their dollars for your. All you can do it watch the exchange rates.
Why is gaseous fuel much more flammable than liquid fuel?
Gaseous fuel is more flammable than liquid fuel because it has a higher surface area to volume ratio, allowing it to mix more easily with oxygen in the air. This leads to quicker combustion and a higher likelihood of ignition. Additionally, gaseous fuels often have lower flash points compared to liquid fuels, making them ignite more readily at lower temperatures.
