In Rivers, Lakes, and Ponds (Under the Microscope) by Sabrina Crewe

By Sabrina Crewe

From single-cell amoebas and algae to microanimals, In Rivers, Lakes, and Ponds teaches readers concerning the microscopic creatures that reside within the nonetheless waters of lakes and ponds and the speeding waters of rivers and streams.

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Put the pieces in the jar of pond water and leave the jar in a sunny place. As the cells divide, your pieces of Spirogyra will grow into long strands again! 29 Glossary algae—protists that are similar to plants archaea—organisms with only one cell and similar to bacteria bacteria—microorganisms with only one cell that are the smallest and most numerous life-forms on Earth biofilm—film made of bacteria and other microbes that forms on surfaces in damp places cell—tiny unit that all livings things are made of cyanobacteria—type of water-dwelling bacteria that live in strands or clumps and resemble plants and algae domains—major groups that all living things on Earth belong to: eukaryota, bacteria, and archaea.

Growing Spirogyra The alga Spirogyra is common in many bodies of water. If you find Spirogyra, put a few strands in a plastic bag and collect some of the water in a jar. When you get home, tear a Spirogyra strand into small pieces. You can use a pin to do this. Put the pieces in the jar of pond water and leave the jar in a sunny place. As the cells divide, your pieces of Spirogyra will grow into long strands again! 29 Glossary algae—protists that are similar to plants archaea—organisms with only one cell and similar to bacteria bacteria—microorganisms with only one cell that are the smallest and most numerous life-forms on Earth biofilm—film made of bacteria and other microbes that forms on surfaces in damp places cell—tiny unit that all livings things are made of cyanobacteria—type of water-dwelling bacteria that live in strands or clumps and resemble plants and algae domains—major groups that all living things on Earth belong to: eukaryota, bacteria, and archaea.

If you find Spirogyra, put a few strands in a plastic bag and collect some of the water in a jar. When you get home, tear a Spirogyra strand into small pieces. You can use a pin to do this. Put the pieces in the jar of pond water and leave the jar in a sunny place. As the cells divide, your pieces of Spirogyra will grow into long strands again! 29 Glossary algae—protists that are similar to plants archaea—organisms with only one cell and similar to bacteria bacteria—microorganisms with only one cell that are the smallest and most numerous life-forms on Earth biofilm—film made of bacteria and other microbes that forms on surfaces in damp places cell—tiny unit that all livings things are made of cyanobacteria—type of water-dwelling bacteria that live in strands or clumps and resemble plants and algae domains—major groups that all living things on Earth belong to: eukaryota, bacteria, and archaea.

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