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Flatworms
The phylum Platyhelminthes (aka flatworms) are rather primitive invertebrates that can be either parasitic or non-parasitic depending upon the species. They have no body cavity, no circulatory organs and no respiratory organs. Questions about flatworms can be asked and answered here.
383 Questions
How are round worms and segmented worms different?
As opposed to earthworms, arthropods (crayfish) segments often become fused. Therefore, certain parts of a crayfish that looks like one piece, was once multiple pieces before they became fused together, so some segments were actually once more than just that one segment. An earthworm on the other hand, is just as many segments as are seen, and always has been.
Why is the new Zealand flatworm such a threat to earthworms?
The New Zealand flatworms are voracious carnivores. Lacking a coelom, these worms absorb the nutrient from their prey by dissolving it in mucus which they then absorb. Ordinary annelid (round) earthworms seem to not have a defence against this behaviour, and they have been introduced accidentally into Europe, no doubt as eggs along with minor traces of soil on agricultural produce.
Since the round worms and flat worms co-exist reasonably successfully in NZ, there is no reason to believe other than this 'happy' condition will eventually prevail in Europe.
Is the American Dream then and the American Dream now the same?
Yes. The term "American dream" is used in many ways, but it essentially is an idea that suggests that anyone in the US can succeed through hard work and has the potential to lead a happy, successful life. This idea hasn't changes throughout time therefore has stayed the same now and then. :)
Which type of symmetry do flatworms exhibit?
Flatworms exhibit bilateral symmetry, which means that their body can be divided into two symmetrical halves along a single plane. This type of symmetry allows for the development of more complex body structures and directional movement.
Is it true that flukes and tapeworms are best described as detritus feeders?
Trinchinosis is usually caused by eating flukes in raw fish
A common treatment for eye flukes, particularly in fish, involves the use of antiparasitic medications such as praziquantel or fenbendazole. It's essential to consult a veterinarian or aquatic specialist to determine the appropriate dosage and treatment plan based on the specific species and severity of the infestation. Additionally, maintaining good water quality and tank hygiene can help prevent future outbreaks.
Why do magnets affect planarian regeneration?
Magnets affect planarian regeneration primarily due to their influence on the orientation and behavior of magnetite nanoparticles within the planarian's body, which can impact cellular processes. Research suggests that the presence of a magnetic field may enhance the organization of cellular structures and signaling pathways involved in regeneration. This can lead to accelerated healing and regeneration of tissues. Additionally, the magnetic field might alter the expression of genes related to regeneration, further facilitating the process.
Are scorpions annelids flatworms mollusks arthropods cnidarians or echinoderm?
a scorpion is a Arthropods
What disadvantages do flatworms and horseshoe crab?
Please rephrase the question so that it makes sense.
