Darkfield light micrograph of Paramecium bursaria,a ciliate protozoan,that contains endosymbiotic green algae (Chlorella sp.).Paramecium are found mainly in stagnant ponds,feeding on bacteria plant particles.They have permanent mouth called oral grove.Food taken in through oral groove is digested

• Contributor: Science Photo Library / Alamy Stock Photo
• Image ID: HJ0B87
• File size: 24.4 MB (399.7 KB Compressed download)
• Releases: Model - no | Property - no
• Dimensions: 3500 x 2437 px | 29.6 x 20.6 cm | 11.7 x 8.1 inches | 300dpi
• Date taken: 31 January 2006
• Photographer: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY