plankton. n. 1. (Biology) the organisms inhabiting the surface layer of a sea or lake, consisting of small drifting plants and animals, such as diatoms.Compare nekton. [C19: via German from Greek planktos wandering, from plazesthai to roam].lankton is a primary food source for many animals, and consists of bacteria, protozoans, certain algae, cnidarians, tiny crustaceans such as copepods, and many other organisms. Microscopic aquatic organisms that float near the surface of water.
Descriptions of Common Tomato Diseases. 1  Anthracnose - small, circular, slightly sunken spots... 2  Bacterial Canker - wilting, browning plants and bird's-eye fruit spots. 3  Bacterial Spot - small, dark, slightly raised dots on fruit... 4  Bacteria Wilt - entire plant dies rapidly after browning... 5  Blossom End Rot - spot on bottom of fruit turns black and...
Bacterial diseases: Types list. The list of types of Bacterial diseases mentioned in various sources includes: 1  Lyme disease. 2  Granuloma inguinale. 3  Bacterial vaginosis. 4  Gonorrhea.5  Syphilis. 6  Congenital syphilis. 7  Mycobacterium avium Complex.acterial diseases: Types list. The list of types of Bacterial diseases mentioned in various sources includes: 1  Lyme disease. 2  Granuloma inguinale. 3  Bacterial vaginosis. 4  Gonorrhea. 5  Syphilis. 6  Congenital syphilis.