Which of the following animals use dissolved oxygen for breathing?
Which of the following animals use dissolved oxygen for breathing?
Fishes use a specialized organ called gills to breathe. They use the oxygen dissolved in water.
Do fishes need oxygen?
Fish, like all other complex life forms, need oxygen to survive. They get theirs in the form of oxygen gas dissolved in the water. Warm water holds less dissolved oxygen than cold water, so summer is the time when fish can have a hard time getting enough oxygen.
What is the importance of oxygen dissolved in water?
Dissolved oxygen (DO) is one of the most important indicators of water quality. It is essential for the survival of fish and other aquatic organisms. Oxygen dissolves in surface water due to the aerating action of winds. Oxygen is also introduced into the water as a byproduct of aquatic plant photosynthesis.
Can you oxygenate water?
You can drink oxygenated water before or after exercise, or simply as a regular beverage throughout the day in place of, or in addition to, regular water. While oxygenated water can be used throughout the day, most choose to consume it surrounding exercise to maximize its potential benefits.
What happens when air has more oxygen?
By contrast, when oxygen concentrations are higher, the atmosphere gets thicker and scatters more sunlight. As a result, there is less water vapor to trap heat. Adding in oxygen’s affects during other time periods could lead to more accurate models of the planet’s past, the researchers say.
What would happen if the air was 100% oxygen?
If we only had oxygen in our atmosphere, our fires would become massive. So if you could breathe when there was only oxygen, the giant insects and the Earth burning all around you would make life pretty tough–even impossible. The only way to survive would be to adapt and to make sure fires never happened.
Why does oxygen make bugs bigger?
It is because when the oxygen concentration in the atmosphere is high, the insect needs smaller quantities of air to meet its oxygen demands. The tracheal diameter can be narrower and still deliver enough oxygen for a much larger insect, Kaiser concluded.
What prevents insects from getting too large?
Air penetrates the trachea by diffusion. The length which air can travel quickly enough by diffusion, in such tiny tubes, is very limited. That is about 1 cm. So that is why insects cannot grow larger than a few centimeters across.
Were there giant bugs in prehistoric times?
Insects reached their biggest sizes about 300 million years ago during the late Carboniferous and early Permian periods. This was the reign of the predatory griffinflies, giant dragonfly-like insects with wingspans of up to 28 inches (70 centimeters).
What is the biggest bug ever in history?
dragonfly
What is the biggest spider ever to live?
goliath bird-eating spider