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What organisms are the first to photosynthesize?
Scientists believe the first photosynthetic organisms may have been cyanobacteria. This is believed because the biochemical pathways in the unicellular cyanobacteria.
What process do scientists think provided earth with an oxygen-rich atmosphere?
Scientists believe that stromatolites were responsible for providing an oxygen-rich atmosphere in precambrian times. Stromatolites are structures formed of sediment. The cyanobacteria that formed these structures were photoautotrophs that used sunlight, carbon dioxide and water to produce their food and a byproduct of oxygen.
How is cyanobacteria like algae and land plants?
Although cyanobacteria do not have chloroplasts, they do have thylakoid membrane, where photosynthesis occur.
What organism do scientists believe are plants' ancestors?
The dinosaur is thought to be the ancestor of all things today.
Why do scientist think the the amount of oxygen in the earth's atmosphere has increased?
Scientists believe that the amount of oxygen in Earth's atmosphere has increased over time due to the evolution of photosynthetic organisms, such as plants and cyanobacteria. These organisms release oxygen as a byproduct of photosynthesis, leading to an accumulation of oxygen in the atmosphere.
What do Cyanobacteria use for energy?
Cyanobacteria have the same green pigment that plants have, chlorophyll, and use it to make energy.
What is the sequence that represents the correct order of development of chloroplasts of modern plants from their primitive ancestors?
Cyanobacteria > Red Algae > Green Algae > Land Plants
Where do scientists believe plants evolved?
Scientists believe that plants evolved on land from green algae, specifically from a group called charophytes. This transition from water to land occurred around 450 million years ago during the Ordovician period.
Scientists think that plants evolved directly from what kingdom?
Scientists believe that plants evolved directly from a freshwater green algae called charophyte. There are two different types of charophytes, coleochaetales and charales, which strongly resemble earliest land plants.
Which two plants have cyanobacteria in there roots?
one is the gymnosperm phyla Cycad
What are three major groups of photosynthetic organisms?
The three major groups of photosynthetic organisms are plants, algae, and cyanobacteria. Plants include a wide range of species from mosses to trees, algae encompass diverse forms such as seaweeds and diatoms, and cyanobacteria are single-celled prokaryotic organisms capable of photosynthesis.
8.How do plants, algae, and cyanobacteria produce their own food?
asexual reproduction
