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It would be impossible for oxygen requiring organisms to exist before photosynthetic organisms because there was not oxygen in the atmosphere for these organisms to breathe. Photosynthetic organisms take carbon dioxide and water in and create oxygen as waste. Before these photosynthetic organisms existed there was not enough or any oxygen in the atmosphere for organisms requiring oxygen to survive.
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Are all organisms that are photosynthetic are oxygenic?
No, not all photosynthetic organisms are oxygenic. Oxygenic photosynthesis is the main process in which plants, algae, and cyanobacteria produce oxygen as a byproduct. However, there are some photosynthetic bacteria that do not produce oxygen during photosynthesis.
What does The rise of photosynthetic organisms do?
The rise of photosynthetic organisms helped to increase oxygen levels in the Earth's atmosphere, promoting the evolution of more complex life forms. Photosynthetic organisms also play a crucial role in the carbon cycle by converting carbon dioxide into organic compounds, which has a significant impact on the global climate.
What organisms require oxygen for respiration?
Most animals, including humans, require oxygen for respiration. This includes mammals, birds, reptiles, and many invertebrates. Additionally, some bacteria and fungi also require oxygen for their respiration processes.
How does photosynthesis beniffit heterotrophs?
By providing an energy source for them. The majority of heterotrophic organisms get their energy by eating photosynthetic organisms or indirectly, by eating things which themselves eat photosynthetic organisms.
The rise of photosynthetic organisms did not?
The rise of photosynthetic organisms did not happen suddenly, but gradually over billions of years through evolutionary processes. It led to the oxygenation of Earth's atmosphere, which allowed for the development of more complex life forms. This event has had a profound impact on the Earth's environment and ecosystems.
What do all photosynthetic organisms have in common?
All photosynthetic organisms have chlorophyll or a similar pigment that captures light energy, allowing them to convert carbon dioxide and water into glucose and oxygen. They also have specialized structures, such as chloroplasts, where photosynthesis takes place. Additionally, they require sunlight to power the photosynthetic process.
Why do scientists think that the first organisms did not need oxygen to survive?
Breathable oxygen, or O2, did not exist in large quantities in the atmosphere until after the evolution of photosynthetic organisms. Hence, early organisms had to have an anaerobic metabolism, or one that did not require oxygen. However, compounds containing oxygen, such as water, have always been necessary to organisms.
Are all organisms that are photosynthetic are oxygenic?
No, not all photosynthetic organisms are oxygenic. Oxygenic photosynthesis is the main process in which plants, algae, and cyanobacteria produce oxygen as a byproduct. However, there are some photosynthetic bacteria that do not produce oxygen during photosynthesis.
What effect did photosynthetic cyanobacteria have on earth's environment?
Photosynthetic cyanobacteria were the first organisms to produce oxygen. The effect of their oxygen production was that the earth became an environment which was suitable for life.
Do hammerhead sharks require oxygen?
Yes, they are aerobic organisms so they require oxygen.
How do animals and photosynthetic organisms depend on each other for survival?
Animals and photosynthetic organisms depend on each other for survival through a process called symbiosis. Photosynthetic organisms, like plants and algae, produce oxygen and food through photosynthesis, which animals need to survive. In return, animals provide carbon dioxide and nutrients that photosynthetic organisms need for growth. This mutual relationship ensures the balance of oxygen and carbon dioxide in the atmosphere, making it possible for both types of organisms to thrive.
What does The rise of photosynthetic organisms do?
The rise of photosynthetic organisms helped to increase oxygen levels in the Earth's atmosphere, promoting the evolution of more complex life forms. Photosynthetic organisms also play a crucial role in the carbon cycle by converting carbon dioxide into organic compounds, which has a significant impact on the global climate.
What was the earth's atmosphere before like photosynthesis?
Before photosynthesis, the Earth's atmosphere was primarily composed of carbon dioxide and nitrogen, with very little oxygen. The emergence of photosynthetic organisms led to an increase in atmospheric oxygen levels over time.
Does krill produce oxygen?
Krill primarily consume phytoplankton and do not produce oxygen in a significant amount. The oxygen produced by marine organisms mainly comes from photosynthetic organisms like phytoplankton and seaweed.
What is the connection between organisms in a stream and the dissolved oxygen level?
Organisms in streams need oxygen to live when lacking dissolved oxygen it will kill these organisms. edit: unless the organisms in the stream are photosynthetic, in which case they will increase the oxygen levels. however, by far, most organisms in a stream are not photosynthetic and oxygenation occurs solely through aeration and surface area dissolving from the air. so, to answer the question, organisms (most organisms which aren't plant-based photosynthetic organisms) decrease the amount of oxygen in a stream. edit: a flowing stream has turbulence which helps aerate the water, increasing dissolved oxygen. In contrast, stagnant water tends to be low in dissolved oxygen, except near the surface. Multicellular animals (like fish) need a good supply of dissolved oxygen to thrive.
What role do photosynthetic organisms, such as plants or algae, play in providing oxygen and food for animals in their ecosystems?
Photosynthetic organisms, like plants and algae, produce oxygen through the process of photosynthesis. This oxygen is essential for animals to breathe. Additionally, these organisms also serve as a primary source of food for many animals in their ecosystems, forming the base of the food chain.
What organisms require oxygen for respiration?
Most animals, including humans, require oxygen for respiration. This includes mammals, birds, reptiles, and many invertebrates. Additionally, some bacteria and fungi also require oxygen for their respiration processes.
