Giraffe Characteristics. The giraffe is the tallest living animal which is instantly recognizable by its exceptionally long neck. Adult males stand 15 â 19 feet (4.6 â 6.0 metres) tall, whereas females are shorter at 13 â 16 feet (4 â 4.8 metres) tall.
Bacterioplankton are bacteria and archaea, which play an important role in remineralising organic material down the water column (note that many phytoplankton are also bacterioplankton). Plankton are found throughout the oceans, seas and lakes of Earth.
What are Zooplankton. The name plankton is derived from the Greek word planktos meaning to wander, and refers to the weak swimming movements of organisms in this category. Plankton can be subdivided into animals, or zooplankton, and plants, or phytoplankton.There are advantages in being small in aquatic environments: in the first place the base of the food chain, i.e. the phytoplankton, consist of microscopic plants from 1/1000 of a mm to 2 mm in size.he name plankton is derived from the Greek word planktos meaning to wander, and refers to the weak swimming movements of organisms in this category.