What is the relationship between dissolved oxygen and temperature mcq?

Temperature: The Solubility of oxygen decreases as temperature increases. Cold water holds more dissolved oxygen than warm water.

What is the relationship between oxygen and kelp?

Despite their short lives by plant standards, kelps siphon huge amounts of carbon from the atmosphere—what scientists call “primary productivity.” They take carbon dioxide from the air and turn it into sugar fuel with the help of sunlight and water, releasing oxygen back into the air.

What is the relationship between photosynthesis and aerobic cellular respiration and why is this important to life on earth?

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

What is the relationship between temperature and do?

Air and Water Temperature Increases Lower levels of dissolved oxygen due to the inverse relationship that exists between dissolved oxygen and temperature. As the temperature of the water increases, dissolved oxygen levels decrease.

What is the relationship between temperature and kelp photosynthesis?

Kelp forests grow best in nutrient-rich, clear waters whose temperatures are between 42–72 degrees F (5–20 degrees C). The water must be clear so that sunlight can reach the ocean floor where the kelp life begins. If the water is too warm (warmer than 20 degrees), the kelp does not thrive as well.

What is the relationship between temperature and kelp survival?

Kelp forests grow best in nutrient-rich, clear waters whose temperatures are between 42–72 degrees F (5–20 degrees C). The water must be clear so that sunlight can reach the ocean floor where the kelp life begins. If the water is too warm (warmer than 20 degrees), the kelp does not thrive as well.

What is the relationship between temperature and kinetic energy?

The relationship between temperature and kinetic energy is that the higher the temperature, the more kinetic energy there is.

What is the relationship between water clarity and urchin survival?

Does water clarity affect sea urchins? Explanation: The higher the water clarity, the lower/or negligible is the number of urchin found in that particular water body. It is so because sea urchins prefer to stay in water bodies with proximity to rock pools and mud.

What is zinc in water?

Zinc is naturally present in water. The average zinc concentration in seawater is 0.6-5 ppb. Rivers generally contain between 5 and 10 ppb zinc. Algae contain 20-700 ppm, sea fish and shells contain 3-25 ppm, oysters contain 100-900 ppm and lobsters contain 7-50 ppm.

What other variations do urchins possess that may act as adaptations for survival?

It is covered with hundreds of sharp spines that serve as an adaptation to discourage many potential predators. As an herbivore, the sea urchin has adapted to rocky tidepools by developing five very sharp, hard teeth to scrape minute algae plants off the rocks.

What ph do urchins live in?

However, sea urchins thrive in naturally undersaturated waters such as upwelling zones where pH may reach values of 7.75, tidal pools where during nocturnal low tide pH can decrease to 7.4, around CO2 seep in areas with pH 7.4, in deep ocean, and in Antarctic waters where the CaCO3 saturation state is below 1 (e.g. …

Where is phosphorus stored?

Unlike carbon and nitrogen, most of the phosphorous on Earth is stored in soil and rocks in the form of phosphate. Phosphate is one molecule of phosphorous surrounded by four molecules of oxygen, or PO43-. Plants can absorb phosphate directly through their roots.

Why do algae need nitrogen?

Nitrogen and phosphorus support the growth of algae and aquatic plants, which provide food and habitat for fish, shellfish and smaller organisms that live in water. But when too much nitrogen and phosphorus enter the environment – usually from a wide range of human activities – the air and water can become polluted.

Why does do decrease when temperature increases?

Air and Water Temperature Increases Lower levels of dissolved oxygen due to the inverse relationship that exists between dissolved oxygen and temperature. As the temperature of the water increases, dissolved oxygen levels decrease.

Why would there be a relationship between temperature and oxygen consumption?

When temperature reaches to a certain value (around 150 °C), the oxygen consumption rate increases sharply. Moreover, the increasing trends of these three coal samples are completely same. The temperature at which the oxygen consumption rate begins to increase sharply is called the critical temperature.

How do sea urchins obtain energy?

Populations of most urchin species remain healthy. In fact, in some cases where their predators have been overhunted, sea urchins overrun their kelp forest habitats, effectively eliminating them through overconsumption. As the marine environment continues to change due to a result of climate change, overfishing, and pollution, many of the habitats in which the sea urchin lives are under threat.

Are humans similar to sea urchins?

This, scientists say, shows that sea urchins are closer kin to humans than beetles, flies, crabs, and clams. “Humans and sea urchins have a common ancestor,” Weinstock says. The eyeless sea urchin also has genes associated with taste, smell, hearing, balance—and surprisingly, even vision.

Can i eat seagrass?

Be gentle: Remind visitors to be gentle when looking at seagrasses. Small animals may be hiding among them. Delicate eggs may have been laid upon them. Don’t eat seagrasses or fruits: the water they are in may be unclean.

Do snakes have double circulation?

Despite the peculiar and complex circulation, lizards, snakes, and crocodilians have achieved a double system.

How do sea stars and sea urchins operate their tube feet?

The tube feet in a starfish are arranged in grooves along the arms. They operate through hydraulic pressure. They are used to pass food to the oral mouth at the center, and can attach to surfaces. … Tube feet allow these different types of animals to stick to the ocean floor and move slowly.

How do sea urchins evolve?

Following the great extinction of animals 250 million years ago, the modern sea urchins emerged as dominant echinoderm species. The purple sea urchin emerged in the North Pacific Ocean during a rapid burst of speciation and diversification 15-20 million years ago.

How do sea urchins pick things up?

They are often described as suction cups, however recent research[1] indicates that echinoderms likely use a bio-adhesive, rather than suction, to achieve their Spiderman-like climbs. Urchins also use these sticky tube feet to pick up and hold onto rock, shells, golf balls, and other treasures.

How do sea urchins react to light?

Esther Ullrich-Luter – one of Arnone’s collaborators – found that each foot has two clusters of light-sensitive cells: one at the tip and another at its base. … Through this network, the sea urchin detects can react to light, which it spots with its hundreds of feet. Its entire surface is effectively a big compound eye.

How do starfish open clams?

The starfish forces open the shell with suction disks on the underside of its body, and then inserts its stomach membranes through its mouth into the opening of the shell. Digestive juices break down the shellfish’s body, which is then absorbed into the starfish’s stomach.

How do urchins feed?

Sea urchins eat using a structure called Aristotle’s lantern. It is made up of five hard plates that come together like a beak. They use their beak-like mouth to scrape rocks clean of algae.

How does a sea star eat a urchin?

Starfish eat by wrapping themselves around the sea urchin and then everting their stomach against the sea urchin to dissolve away the flesh and shell, eventually getting to the succulent interior of the sea urchin. … To protect themselves intertidal sea urchins will pile rocks and shells on top of themselves.

How does a starfish breathe?

Sea stars don’t use gills or lungs to breathe. They rely on diffusion across surfaces in their body. For example, most oxygen is taken up from water that passes over their tube feet and papulae or skin gills. Skin gills are small projections near the base of the spines, usually on the topside.