Algae
Choose 3 of the 5 algea below. Draw each one in your packet and write 3 facts for each.
Anabaena
![Picture](/uploads/4/7/3/8/4738221/1546597.jpg)
The anabaena, a type of blue-green algae, looks like a string of beads with bigger, empty cells speard on the filament. The blooms of anabaena discolor the water. The anadaena also create a bad odor when the cells die and begin to decay. Anabaena are producers and obtain energy directly from the sun.
Nostoc
![Picture](/uploads/4/7/3/8/4738221/5940399.jpg)
Nostoc, a type of blue-green algae, are enclosed in a gelatinous mass and the filaments sometimes float or attach to objects. Nostoc inhabit swift streams or moist shores. When nostoc inhabit lakes, they may grow in water up to 60 feet deep. Like the other algea, nostoc are producers and their energy comes directly from the sun.
Spirogyra
![Picture](/uploads/4/7/3/8/4738221/1231526.jpg)
Spirogyra is a type of green algae with a spiral chloroplast in each cell; they are autotrophs, like other algae, which means they do not injest food to get energy. They obtain energy from the sun as well. They can form dense coverings on surfaces in the ponds in spring.
Scenedesmus
![Picture](/uploads/4/7/3/8/4738221/4448220.jpg)
This type of green algae are often found in small ponds and pools. The scenedesmus cells are generally very small, and most species grow in colonies (they don't mix with other types of algae). They are closely related to Ankistrodesmus, another type of green algae, which are a bit larger and mixes with other types of algae.
Closterium (Desmids)
![Picture](/uploads/4/7/3/8/4738221/6884807.jpg)
Closterium are a common type of desmids (bright green cells common in with plankton). Closterium are usually crescent shaped, and they have no isthmus. An isthmus is a connection between two semicells. Closterium are signle celled.
Diatoms
Choose 1 of the diatoms below. Draw it in your packet and write 3 facts about diatoms.
Diatoms: Diatoms are single-celled, yellow-green algea that fit together perfectly because the "valves" o ftheir cells overlap. Many diatoms are common in plankton. They can move by using the band of protoplasm along the end of the valve. Other diatoms attach to submerged objects or to other diatoms and exist as colonies. Diatoms are also producers in the energy pyramid.
Diatoms: Diatoms are single-celled, yellow-green algea that fit together perfectly because the "valves" o ftheir cells overlap. Many diatoms are common in plankton. They can move by using the band of protoplasm along the end of the valve. Other diatoms attach to submerged objects or to other diatoms and exist as colonies. Diatoms are also producers in the energy pyramid.
Tabellaria
![Picture](/uploads/4/7/3/8/4738221/3077124.jpg)
Meridion
![Picture](/uploads/4/7/3/8/4738221/8825702.jpg)
Navicula
![Picture](/uploads/4/7/3/8/4738221/4609216.jpg)