Drosera rotundifolia is an insectivorous plant that occurs in marshes, bogs and fens in a circumboreal distribution; common names for this species are Roundleaf Sundew or...
OrcaLast Updated on 2014-04-16 15:11:43Orcinus orca, or simply orca, is in fact the largest of the dolphins within the order of cetaceans. This species of marine mammal, also commonly known as the killer whale, is easily identified by its black and white coloration; the underside is white with white patches behind the eyes and a greyish white area called a saddle-patch behind the dorsal fin. The shape of the saddle is unique in each animal, and can help to identify individuals. The dorsal fin is also used to recognize individuals. Male orcas have the tallest dorsal fin known in the animal kingdom, measuring up to six feet high in mature males. Females have shorter, more curved dorsal fins.
Kingdom: Anamalia (Animals)
Class:------ Mammalia... More »
Spinner dolphinLast Updated on 2014-04-13 11:53:51The Spinner dolphin (Stenella longirostris), a marine mammal in the family of oceanic dolphins, gets their name from the spinning behavior they show when they leap out of the water. This cetacean species lives in schools showing a dominance hierarchy and displays complex interactions among individuals. S. longirostris also engages in intricate echolocation underwater acoustics. Spinner dolphins attract tourists for dolphin watching. The species is of special interest for scientific investigation because of its remarkable capacity to learn.
Species:--------Stenella longirostris... More »
CnidariaLast Updated on 2014-04-02 16:00:25
Cnidaria (corals, jellyfish, and Hydra) are incredibly diverse in form, as evidenced by colonial siphonophores, massive medusae and corals, feathery hydroids, and box jellies with complex eyes. Yet, these diverse animals are all armed with stinging cells called nematocysts. Cnidarians are united based on the presumption that their nematocysts have been inherited from a single common ancestor. The name Cnidaria comes from the Greek word cnidos, which means stinging nettle. Casually touching many cnidarians will make it clear how they got their name when their nematocysts eject barbed threads tipped with poison.
Many thousands of cnidarian species live in the world's oceans, from the tropics to the poles, from the surface to the bottom. Some even burrow. A smaller number of species are found in rivers and freshwater lakes.
There are four major groups of cnidarians:
Anthozoa,... More »
HerbivoreLast Updated on 2014-02-13 16:58:29A herbivore is an animal that obtains its energy and nutrients by feeding on plants. Different types of herbivores eat different plant parts. For example, folivores feed on leaves, frugivores feed on fruits, granivores feed on seeds, pollinivores feed on pollen, and nectarivores feed on nectar. Herbivores can vary greatly in size, ranging from the largest terrestrial animals (elephants) and large marine mammals such as manatees and dugongs to small insects, nematodes and thrips. Herbivores are primary consumers (they receive their energy by consuming primary producers), so they play an important trophic role in ecological communities and food webs.
Because mature leaves are low in nutrients, and difficult to digest because of their high cellulose content, animals use many different strategies to eat leaves. Animals that feed on grass leaves are generally... More »
Leather OakLast Updated on 2014-01-18 12:16:02
The Leather Oak, a California endemic, occurs primarily in the California interior chaparral and woodlands ecoregion. It is a species with strong affinity for ultramafic soils, a geochemical class of high magnesium, low calcium and nutrient deficient media. In appearance this is a shrub-like tree whose leathery leaves reveal its common name and obvious membership in the sclerophyll vegetation category, a morphological class of hard leaved species that may occur in such diverse places as Australia, Southern Africa, the Chilean matorral and the Mediterranean Basin as well as the California Floristic Province.
Q durata has two recognized varieties:
* var. durata, occurs at elevation 150 to 1500 m in the California North and South Coast Ranges, San Francisco Bay Area and northern Sierra Nevada foothills. Upper leaf sufaces of this variety are severely... More »
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