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Biology
Invertebrates: In biological terms, what constitutes a "head"?
Echinodermata Phyla:
What other phyla relies on "hydraulics" as part of their locomotion system?
Arthropoda
Phylum Cnidaria:
How do medusa of Aurelia and Gonionemus differ in size, arrangement of tentacles, and shape of manubrium?
Aurelia has tentacles that are evenly spaced around their center; they also have a single attached to a single tentacle bud. They are more circular in shape.
The Gonionemus is narrow and has many tentacles. They are also small and are bell shaped.
What structures within the coral polyp do the radial ridges within each depression support?
Calyx and stomach
How does fragmentation contribute to the evolutionary success of anthrozoans in their environment?
For many corals, the damage that is caused to the initial coral structure by storms or strong wave actions may create fragments. These fragments move through the water and create new colonies of coral.
Durgesia
A head in biology is the portion of a creature which has the brain, or chief ganglia of the nervous system. It may also have the mouth and/or chief sensory organs.
Class Cestoda
5a. How does a scolex compare in size to a proglottid near the scolex? Near the posterior end?
The scolex is the front end and has the suckers or hooks. It is then connected to the neck and then the proglottid. The segments can be 10-15 m long.
e. Is having a scolex significant to a fundamental process for tapeworms? For which process, and how is it significant?
The scolex is used to attach itself to the intestinal wall of the host creature. This works for the digestive process and allows the tapeworm to feed.
f. Tapeworms are specialized. Would you expect specialists to have a unique morphology? Why?
The tapeworm has components to its morphology: proglottids, scolex, and tegument. Each would have a…
Beauty and Life of the Monarch Butterfly This is a paper about the Monarch Butterfly. What animal kingdom is it from? Listed is the life cycle of the butterfly. What are the adaptations of the Monarch Butterfly? THE BEAUTY OF THE MONARCH BUTTERFLY Many people think butterflies live in a carefree environment, but they are wrong. They seem so peaceful visiting flowers, but they are bound by social conventions and instincts of their
Noncoding DNA, also known as "junk DNA" describes portions of the DNA sequence that do not appear to have any presentable use -- they do not encode for proteins, etc. In fact, in a most eukaryote cells, a rather large percentage of the total genome is noncoding DNA, but this varies between species. However, it is now a misnomer to call this material "junk," because the more sophisticated we become
Species of California (Common Teasel) The Common Teasel (Dipsacus fullonum) is a plant species identified by several alternate names, including wild teasel, Indian teasel, card teasel, card thistle, gypsy-comb, Venus-cup, and finally Fuller's teasel. With the exception of the great plains region in the north, it can be found growing wild throughout the continental United Staes and parts of Canada. Fuller's teasel is actually a cultivated variety (Dipsacus sativus), which
Continental tropical (cT) air masses are hot, dry, unstable at low levels and generally stable aloft (upper-level ridge); they originate in northern Mexico. Continental polar (cP) or continental arctic (cA) air masses are cold, dry, and stable originating over northern Canada and Alaska as a result of radiational cooling. (Oklahoma Climatological Survey, 2004)" The greenhouse effect has been in the news for the last several decades especially with the resulting
endangered species' means any species which is in danger of extinction throughout all or a significant portion of its range other than a species of the Class Insect a determined by the Secretary to constitute a pest whose protection under the provisions of this Act would present an overwhelming and overriding risk to man." A threatened species "means any species which is likely to become an endangered species within
Stream Degradation and King County' Salmon Population King County in Washington State is home to some of the most significant spawning beds in the nation for several major species of salmon, such as the endangered steelhead and Chinook (or King) species. As a result of Washington's urbanization over the preceding years and decades, the purity and integrity of King County's streams and rivers have been degraded and the waterways contaminated (Morley,