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...
Tomato classification is done on the basis of its family, order, genus and species. Scientific classification of Tomato is needed for its detailed study. Scientific classification of Tomato tells about its basic characteristics and also gives information about its relation with other fruit.omato Family. Family is a subdivision of order. Tomato family is Solanaceae. Scientific classification of Tomato is done on the basis of its characteristics. Shape of leaves, fruit form, type of flower, etc. determine the scientific classification of Tomato.