Metiska Nude Entire Media Library #610

Zooplankton zooplankton are small animals that occur in the water column of either marine or freshwater ecosystems Zooplankton are a diverse group defined on the basis of their size and function, rather than on their taxonomic affinities Most species in the zooplankton community fall into three major groups — crustacea, rotifers, and protozoas Crustaceans are generally the most abundant. The most common zooplankton in the ocean are the crustaceans, which include the crabs, shrimp, and lobsters, and account for about 70% of all zooplankton The zooplankton are in turn fed upon by larger zooplankton, small fish, and some whales Larger fish eat the smaller ones. Xylem a tissue that transports water and dissolved mineral nutrients in vascular plants In flowering plants it consists of hollow vessels that are formed from cells (vessel elements) joined end to end The end walls of the vessel elements are perforated to allow the passage of water In less advanced vascular plants, such as conifers and ferns, the constituent cells of the xylem are called. Herbivore an herbivore is an animal that eats plants as its primary source of sustenance However, many animals are not exclusively herbivorous In addition to feeding mostly upon live plants. Primary producers are able to utilize photosynthesis to create organic molecules from sunlight, water, and carbon dioxide [1]. Food habit studies conducted on 35 bowhead whales (21 males and 14 females) harvested between 1975 and 1989 indicated that bowheads feed on crustacean zooplankton, particularly euphausiids and copepods. Get information and homework help with millions of articles in our free, online library. Plankton include viruses (small molecules like dna or rna that have the ability to reproduce when they are in a host), bacteria, phytoplankton (small plants that float in the ocean water) and zooplankton (small animals that float in the ocean) Another focus of marine biology includes the larger animals called neckton that swim through the water. This will include losses of zooplankton and phytoplankton that form the very base of aquatic food chains, and are critical to the survival of the many species of fish that live in the great lakes.”