what is Photosynthetic autotrophs?

Question

chyeaaaaaaaaaah whats the differnce betweeen photosynthetic autotrophs and chemosynthetic autotrophs

Answer 1

A plant that uses light to synthesize its food.

Chemosynthetic autotrophs instead use chemical and/or heat energy to make their food. Such organisisms are found in the deep sea, where light does not reach. They use geothermal energy as their energy source, rather than the sun.

'Autotrophs' are able to chemically sythesize their own food (as opposed to heterotrophs - which must consume other energy sources).

Answer 2

Photosynthetic Autotrophs

Answer 3

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RE:
what is Photosynthetic autotrophs?
chyeaaaaaaaaaah whats the differnce betweeen photosynthetic autotrophs and chemosynthetic autotrophs

Answer 4

Organisms that use light for the energy to synthesize organic compounds are called photosynthetic autotrophs. organisms that oxidize such compounds as hydrogen sulfide (H2S) to obtain energy are called chemosynthetic autotrophs, or chemotrophs. Photosynthetic autotrophs include the green plants, certain algae, and the pigmented sulfur bacteria . Chemotrophs include the iron bacteria, the nitrifying bacteria, and the nonpigmented sulfur bacteria . Heterotrophs are organisms that must obtain their energy from organic compounds.

Answer 5

well, autotrophs are organisms that can provide food for themselves (ie-plants)
Photosynthetic means they get their food from light (as in photo-)
Chemosynthetic means they make it using chemicals in their enivironment like halophites ( i think thats what they're called), halophites are a kind of bacteria that live off of salt.

Answer 6

1) Phototrophs or photoautotrophs are photosynthetic algae, fungi, bacteria and cyanobacteria which build up carbon dioxide and water into organic cell materials using energy from sunlight. One product of this process is starch, which is a storage or reserve form of carbon, which can be used when light conditions are too poor to satisfy the immediate needs of the organism. Photosynthetic bacteria have a substance called bacteriochlorophyll, live in lakes and pools, and use the hydrogen from hydrogen sulfide instead of from water, for the chemical process. (The bacteriochlorophyll pigment absorbs light in the extreme UV and infra-red parts of the spectrum which is outside the range used by normal chlorophyll). Purple and green sulfur bacteria use light, carbon dioxide and hydrogen sulfide from anaerobic decay, to produce carbohydrate, sulfur and water. Cyanobacteria live in fresh water, seas, soil and lichen, and use a plant-like photosynthesis which releases oxygen as a byproduct. They depend on photosynthesis for both energy and carbon compounds.

2) chemosynthesis, process in which carbohydrates are manufactured from carbon dioxide and water using chemical nutrients as the energy source, rather than the sunlight used for energy in photosynthesis. Most life on earth is fueled directly or indirectly by sunlight. There are, however, certain groups of bacteria, referred to as chemosynthetic autotrophs, that are fueled not by the sun but by the oxidation of simple inorganic chemicals, such as sulfates or ammonia. Chemosynthetic autotrophs are a necessary part of the nitrogen cycle. Some groups of these bacteria are well suited to conditions that would have existed on the earth billions of years ago, leading some to postulate that these are living representatives of the earliest life on earth. This view has been supported by the discovery of small ecosystems that thrive in the hot (350°C/660°F) water found around hydrothermal vents on the ocean floor. In these ecosystems, the primary producers in the food web are bacteria whose life functions are fueled by inorganic chemicals that seep up from the earth's crust.

Hope this helps. You sure learn some complicated material >.O

Answer 7

photosynthetic autotrophs use light to make food. chemosynthetic use chemicals.

Answer 8

An autotroph is an organism that produces complex organic compounds from simple inorganic molecules using energy from light or inorganic chemical reactions. Autotrophs are the producers in a food chain. Plants and other organisms which carry out photosynthesis are photoautotrophs (or phototrophs). Bacteria which derive energy from oxidizing inorganic compounds (such as hydrogen sulfide, ammonium and ferrous iron) are chemoautotrophs, and include the lithotrophs. Autotrophs are fundamental to the food chains of all plant ecosystems. They take energy from the environment (in the form of sunlight or inorganic chemicals) and use it to create carbon-based organic molecules. Other organisms, called heterotrophs, take in autotrophs as food to carry out such functions. Thus, heterotrophs — animals, fungi, as well as most bacteria and protozoa — depend on autotrophs for the energy and raw materials they need. This mechanism is called primary production in the sea. Heterotrophs obtain energy by breaking down organic molecules obtained in food. Carnivorous animals ultimately rely on autotrophs because the energy and organic building blocks obtained from their prey comes from autotrophs they preyed upon. There are some species of organisms that require organic compounds as a source of carbon, but are able to use light or inorganic compounds as a source of energy. Such organisms are not defined as autotrophic, but rather as heterotrophic. An organism that obtains carbon from organic compounds but obtains energy from light is called a photoheterotroph, while an organism that obtains carbon from organic compounds but obtains energy from the oxidation of inorganic compounds is termed a chemoheterotroph. Chemosynthesis is the biological conversion of one or more carbon molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis. Large populations of animals can be supported by chemosynthetic primary production at hydrothermal vents, methane clathrates, cold seeps, and whale falls. Chemoautotrophs, organisms that obtain carbon through chemosynthesis, and are responsible for the primary production in oxygen-deficient environments, generally fall into four groups: methanogens, halophiles, sulfur reducers, and thermoacidophiles. Many microorganisms in dark regions of the oceans use chemosynthesis to produce biomass from 1-carbon molecules. Two categories can be distinguished. In the rare sites at which hydrogen molecules (H2) are available, the energy available from the reaction between CO2 and H2 (leading to production of methane, CH4) can be large enough to drive the production of biomass. Alternatively, in most oceanic environments, energy for chemosynthesis derives from reactions between O2 and substances such as hydrogen sulfide or ammonia. In this second case, the chemosynthetic microorganisms are dependent on photosynthesis which occurs elsewhere and which produces the O2 that they require. Many chemosynthetic microorganisms are consumed by other organisms in the ocean, and symbiotic associations between chemosynthesizers and respiring heterotrophs are quite common.

Answer 9

Green plants who can prepare their own food.

Answer 10

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c. Energy from inorganics