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They are made of both tissues and cells. Systems are made of organs; organs are made of tissue; and tissue is made of cells.
Here is a good website: http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures/animal%20diversity/protostomes/lophotrochozoans/lophotrochozoans.htm
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What is the importance of having cells that are organised into tissues organs and systems?
The importance of the organization of cells into organs and systems is that once cells are organized in this way, more complicated, higher-order forms of life are possible.Single-celled life, like the amoeba, is very basic. To develop more complicated, higher-order forms of life, cells must be able to group together to form tissues and organs. In this fashion cells give up the questionable autonomy that the simple amoeba posses to become part of a larger system in which cells "differentiate" to take on different jobs in a larger system of cells, becoming organs, thus making worms, fish, snakes, birds, dogs, monkeys, and people possible.
Are segmented worms more complex than coelenterates?
Segmented worms are more complex that coelenterates because their bodies are made up of three layers of cells, rather than two layers like for coelenterates. Each layer of cells is filled with specialized tissues and organs.
What is the importance of cells that are organised into tissue organs and systems?
The importance of the organization of cells into organs and systems is that once cells are organized in this way, more complicated, higher-order forms of life are possible.Single-celled life, like the amoeba, is very basic. To develop more complicated, higher-order forms of life, cells must be able to group together to form tissues and organs. In this fashion cells give up the questionable autonomy that the simple amoeba posses to become part of a larger system in which cells "differentiate" to take on different jobs in a larger system of cells, becoming organs, thus making worms, fish, snakes, birds, dogs, monkeys, and people possible.
Do old men sperm carry worms?
No, old men's sperm does not carry worms. Sperm cells only contain genetic material from the male donor and are not capable of carrying worms. If worms are present in the body, they are typically found in the intestines or other tissues, not in sperm cells.
Difference in human and worm circulatory systems?
Humans have a closed circulatory system with a heart that pumps blood through a network of vessels, while worms have an open circulatory system where blood is pumped through a simple system of vessels and sinuses by the contraction of the body wall. In humans, blood is confined to vessels, while in worms, blood comes into direct contact with tissues. Humans have specialized blood cells like red blood cells, white blood cells, and platelets, while worms may have fewer types of blood cells.
Is the leech a sponge?
No, in fact leeches are annelida or segmented worms, like the earthworm. Sponges are something completely different, really just colonies of single cells that can also live apart. Leeches are full animals with organs and stuff.
Are worms multicellular or single celled?
Worms are multicellular organisms, meaning they are made up of multiple cells that work together to form tissues and organs, such as the digestive tract and nervous system. This allows them to carry out complex functions necessary for survival.
Flatworms are soft flattened worms that have tissues and internal what?
Flatworms have tissues and internal organs. They belong to the phylum Platyhelminthes and are characterized by their bilateral symmetry and lack of a coelom (body cavity). Their internal structures include a digestive system, nervous system, and reproductive organs, allowing them to perform various physiological functions.
Are worms asexually?
no Worms reproduce by sexual reproduction, when they get under each other's skin, then release the sperm and egg cells.
Do glow worms have organs?
yes
How are worms mollusks and Cnidaria alike?
A worm is usually on land and is a generic term for all non-arthropod invertebrates. A cnidaria generally lives in marine and other aquatic environments, and have specialized cells that capture prey.
Why are segmented worms more complex than coelenterates?
Round worms belong to phylum Ascelminthes (nemathelminthes) ,a higher phylum than sponges (poriferans) and coelenterones.Round worms are bilaterally symmetric.which is considered as a superior quality.Also they are triploblastic and has a well developed muscular pharyx.Sexual dimorphism is also seen in round worms.
