Birds are formally classified as members of the class Aves, subphylum Vertebrata, phylum Chordata, Kingdom of Animalia. They are characterized as being generally small vertebrates with feathers, scaly legs and no teeth (except in few fossil forms). They have well developed air breathing lungs, a four chambered heart and maintain a constant body temperature of about 380C - 440C. At present, biodiversity is better understood for birds in many respect than any other major group of organisms because they probably inspire more interest in humans, are often spectacular,relatively easily observed...
Birds are formally classified as members of the class Aves, subphylum Vertebrata, phylum Chordata, Kingdom of Animalia. They are characterized as bein...
Plankton consists of many communities of organisms that drift passively near the water's surface. They are mainly unseen by the naked eye, but ultimately fuel the ecosystem. Planktons are plants and animals. Life in a water body can be classified in to three main groups, Benthos bottom dwelling, Nektons swim against water currents, Plankton - drift along water current and capable of very limited movements. The phytoplankton population showed more or less same trend. The seasonal variations in total phytoplankton numbers were due to some factors like temperature, intensity of light,...
Plankton consists of many communities of organisms that drift passively near the water's surface. They are mainly unseen by the naked eye, but ultimat...