1. Spirogyra and Rhizopus are examples.

2. Examples include filamentous algae such as Spirogyra, and waterweeds like the Canadian pondweed ( Elodea ).

3. The damage of aquatic plant Spirogyra sp. and Pistia stratiotes L. from anion surfactant LAS and nonionic surfactant AE was studied with transmission electron microscopy.

4. Now, university scientists say that the substance — produced from the green algae Spirogyra — increased the productivity of the crop by 25 per cent compared with normal fertiliser.

5. Zygote meiosis can be observed with fresh-water algae Chlamydomonas, Spirogyra , Chara for assistant materials.

6. Ali Ashour, who discovered the potential of the substance, derived it from Spirogyra growing in a lake close to Al Isma'iliyah governorate and acquired a patent in 2004.

7. Any of the numerous algae of the division Chlorophyta, such as spirogyra and sea lettuce, that have chlorophyll unmasked by other pigments.

8. Stomach contents examination of two specimens showed a large volume of Spirogyra sp. , Cladocera, sediments (sand) and unidentified organic matter.

9. And with the time and concentration increasing, the damage of Spirogyra will be worse.