Life

What are photosynthetic organisms and what do they need?

What are photosynthetic organisms and what do they need?

Photosynthetic organisms, like algae and plants, do not need to be fed sugar or kept in a low oxygen environment like fermentation microbes. They produce sugars using photosynthesis, and they do not need oxygen as much as they need carbon dioxide.

What is photosynthetic short answer?

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

How important is photosynthetic organisms?

Photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere. Without photosynthesis, the carbon cycle could not occur, oxygen-requiring life would not survive and plants would die. Without photosynthesis there would be little to no oxygen on the planet.

What do photosynthetic organisms have in common?

All photosynthetic organisms contain a pigment called chlorophyll a, which humans see as the common green color associated with plants. Chlorophyll a absorbs wavelengths from either end of the visible spectrum (blue and red), but not from green. Because green is reflected, chlorophyll appears green.

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Where are most photosynthetic cells in plants found?

chloroplasts
Photosynthetic cells are found mainly in the leaves of plants and may have thousands of chloroplasts. Chloroplasts are double-membrane organelles with a smooth outer membrane and an inner membrane folded into disk-shaped sacs called thylakoids. Color and label the outer membrane (1) green.

What energy is needed by photosynthetic organisms?

Photosynthetic cells contain chlorophyll and other light-sensitive pigments that capture solar energy. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as glucose.

How does a photosynthetic organism get its mass?

During photosynthesis, plants convert the sun’s energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water. Each year trees use the left-over carbon molecules to add to themselves, making themselves bigger in mass (size).

Are there any photosynthetic animals?

Some Animals Photosynthesize But plants aren’t the only lifeforms that photosynthesize. There are a handful of examples of photosynthesis in the animal kingdom. When the emerald green sea slug, Elysia chlorotica, eats algae, it acquires the plant’s cellular components, called chloroplasts, that produce chlorophyll.

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Which of these are photosynthetic organisms?

Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis (Figure 1). Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).

What are photosynthetic cells?

Photosynthetic cells are quite diverse and include cells found in green plants, phytoplankton, and cyanobacteria. During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen.

Is the most photosynthetic part of a plant?

1: Structure of a leaf (cross-section): Photosynthesis takes place in the mesophyll. The palisade layer contains most of the chloroplast and principal region in which photosynthesis is carried out.

What is the most important role of photosynthetic organisms in an ecosystem?

Photosynthetic organisms, including plants, algae, and some bacteria, play a key ecological role. They introduce chemical energy and fixed carbon into ecosystems by using light to synthesize sugars.

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Which organisms are capable of performing photosynthesis?

Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis ([link]). Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).

What organisms are the first to photosynthesize?

The first organisms to practice photosynthesis were bacteria, and the cyanobacteria were the first to employ modern photosynthesis, in which oxygen is released as a byproduct. Bacteria are prokaryotic organisms that have a simple cell structure without nucleus or internal organelles.

What organism can not perform photosynthesis?

Bacteria that contain bacteriochlorophyll do not use water as an electron donor and therefore do not produce oxygen. This is known as anoxygenic photosynthesis. Cyanobacteria perform photosynthesis using water as an electron donor in a similar manner to plants. This results in the production of oxygen and is known as oxygenic photosynthesis.

What are organisms aren’t capable of photosynthesis?

Heterotrophic (hetero-, -trophic) organisms, such as animals, most bacteria, and fungi , are not capable of photosynthesis or of producing biological compounds from inorganic sources. As such, they must consume photosynthetic organisms and other autotrophs (auto-, -trophs) in order to obtain these substances.