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Why are annelids more complex than nematodes and platyhelminthes?
Wiki User
∙ 11y ago
Because Annelids have much more "complicated" characteristics such as, The body possesses 3 separate sections of themselves, have a closed Circulatory system, and has a nervous system with an interior nerve ring, ganglia & ventral cord. As nematodes and Platyhelminthes have very simple characteristics:
Nematodes: Bilaterally symmetrical, feeds on just about everything, lives just about anywhere, and has no circulatory system.
Platyhelminthes: do not have an anus, have a sac-like body, contain a hydrostatic skeleton and sexually reproduce.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agoIt has more parts and does more stuff.
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Is it true that the more genes you have the more complex of an organism you are?
it sounds logical the more genes you have ,the more characteristics you have and thus the more complex you are.
How The more complex a driving situation is the?
The more difficult it is to identify and predict
What is the process of change that produces a more complex organism?
Development is the process of change that produces a more complex organism. Classification is the process of organism based on similarities.
What are the examples of the phylum platyhelminthes?
Did you know, potentially life-endangering parasites can live in the human body for up to several decades? Moreover, these parasites, known as blood flukes, have the ability to regenerate themselves. And so, can survive in hostile environments. Furthermore, these worms belong to Phylum Platyhelminthes. Let us explore this phylum. visit our page : theconvergencetech .com
What is most complex?
The correct answer is (from least to most complex) atoms, molecules, cells, tissues, organs, organ systems.
How are earthworms and ascaris similar?
Annelids are segmented whereas roundworms are not. Annelids have a true coelom while roundworms have a pseudocoelom. Annelids have a more complex nervous system than roundworms. Annelids have a more complex circulatory system than roundworms.
Where can one find more information about nematodes?
Nematodes are roundworms. Many of the 28,000 or more species of nematodes are parasitic. Nematodes are very successful organisms, living just about everywhere where there is life.
How do platyhelminths differ from nemathelminths?
Brief answer only. Phyllum Platyhelminthes are the flatworms. These have three layers of cells. Phyllum Annelidia are the segmented worms. These have blood vessels, a developed nervous system, and a digestive system organized round a central tube.
What are the 3 major phylums of the animalia kingdom?
The three major phyla in the animal kingdom are: 1) Chordata (includes vertebrates like mammals, birds, reptiles, amphibians, and fish), 2) Arthropoda (includes insects, spiders, crustaceans, and centipedes), and 3) Mollusca (includes snails, clams, squids, and octopuses).
What is the most common name for flatworms?
The flatworm's scientific name (or at least its Phylum) is Platyhelminthes. I can't give you the real scientific name (which is the genus and species) because there are more than one species of flatworm.
How many different types of parasites are in the world?
according to studies there are more than 12,000 known species of nematodes, they are also in the phylum nematodaactually there is 80,000 species of nematodes
What is the difference between nematodes and other worms?
Nematodes are triploblastic (they have an ectoderm, mesoderm and endoderm) but also have a pseudocoelom (a closed fluid-containing cavity that acts as a hydrostatic skeleton to maintain body shape, circulate nutrients, and hold the major organs). They have a thick cuticle covering their body to protect them from digestion. Just inside their gut are the longitudinal muscles; unlike other worms (annelids), the nematodes lack a circular muscle and so their movement is restricted to a side-to-side whip. The female reproductive system consists of two highly folded ovaries and two oviducts that store eggs Annelids (other worms) are also triploblastic. They are coelomate where the coelom is divided into segments and each segment can move independently. The most distinguishing feature of this group is segmentation, with the segments visible as rings around the body. Movement is by their circular muscles which expand and contract, moving the animal forward as well as side to side. Movement is also aided by the presence of bristles along the body. So basically the main difference in the two phylum is the presence or lack of circular muscle which is an important evolutionary step in annelids as it allows more effective movement.
Do nematodes molt?
yes and they may lay more than 200,000 a day
How do platyhelminthes move?
Many Platyhelminthes, or flatworms, move by a series of muscles in their body that are either lengthwise, circular, or slanted layers. Others move the same way slugs or snails do, by undulating their body and leaving a slimy trail on the ocean floor. There is a more in-depth, but also more complicated wording, of flatworms movement on the site below.
What annelids do polychaetes include?
earthworms, polychaete worms, and leeches.
Why do nematodes affect plants in sandy soil more than clay or loam?
Drainage is a reason why nematodes affect plants is sandy soil more than in clay or loam. Clay or loam may end up retaining too much water for the roundworms in question. Infiltration and percolation of water tends to be faster and non-saturating in sandy soils, which offer a drier environment, which adult nematodes prefer for ensuring the next generation's sustainability.
Why are organs more complex than tissues?
according to McGraw-Hill, an organ is more complex, learned from my anatomy homework
