Platyhelminth phylum
What are the best recognized representatives of the platyhelminth phylum?
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The most admired representatives of the platyhelminthes are worms which cause human diseases, such as schistosome and taenia. The planaria, as it is been extensively studied in biology, is as well well known.
Name the type of circulatory system in molluscs? How can it be contrasted to respiratory system of the annelids?
Elucidate the economic significance of sponges?
Explain that how can an organism which once undergoes contact along with an antigen be immunized in opposition to potential infections by similar agent?
Give a brief explanation of suction force of the plant cell. Does the suction force make probable or make tricky the entrance of water in the cell?
What is meant by the hormones?
Does DNA replication take place in cell division? Answer: Yes. DNA replication takes place in mitosis and also in meiosis.
What do you mean by the term concentration gradient? Is it accurate to refer to “concentration gradient of water”?
Name the external rigid carapace of arthropods termed? Of which substance it is made up? Which kind of organic molecule is that substance?
What does the given sentence signify? T cell is stated to be class I restricted. Answer: This means that they can identify the antigen, that is, related with class I MHC molecules.
What are illustrations of an ecological and economic significance of molluscs?
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