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Q. What is signifying when it is said that beings of the phylum Annelida are vascular beings? From which other phyla of the animal kingdom does this feature differentiate them?
The classification of these beings as vascular beings means that they have a circulatory system, with vessels that distribute substances all through the body.
Poriferans, cnidarians and flatworms do not have a circulatory system. In nematodes there is circulation of nutrients and gases through the pseudocoelom fluid.
Q. What is cancer? The Cancers are malign neoplasias that is abnormal and uncontrolled proliferation of cells that can disseminate to other sites of the body. The Cancer dissem
Name the two hormones produced by the pancreas ans say in what circumstances, in what way, they adjust the glucose concentration in the blood.
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briefly describe the eggs and follicles
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