& animals aquatic weeds consumes almost all the nutrition from water. as a result fish suffers by lack of food. along with this they also reduces the amount of oxygen in water and creates problems in regular movement of fishes. water hyacinth, topapana, ipomoea aquatica, helenca, maloncho etc.are harmful...
& animals aquatic weeds consumes almost all the nutrition from water. as a result fish suffers by lack of food. along with this they also reduces the amount of oxygen in water and creates problems in regular movement of fishes. water hyacinth, topapana, ipomoea aquatica, helenca, maloncho etc.are harmful...
resemble the thoracica barnacles. the group rhizocephala, for example, externally resembles typical cirripedes, but internally has undifferentiated cells in place of a functional alimentary canal (russell-hunter ). the shell of some barnacles may be discarded to attach and enter the host. like many invertebrates...