Question

give the name of some harmful sponges​

Answer 1

Answer:Hexactinellida, Demospongiae, Sclerospongiae and Calcarea.

Explanation: These are the names of some harmful sea sponges

Answer 2

Answer:

Sponges feed by filtering seawater that contains nutrients, minerals and also the toxins excreted by other animals and plants. They may reuse (sequester) these toxins for their own metabolic functions (secondary metabolites). Sponges also produce their own toxins through normal metabolism, or in collaboration with the many microbes that live inside them. Whatever the source of these toxic chemicals, many have been found to be highly toxic to other life forms. In fact some of the most toxic chemicals known in nature have been discovered from sponges. Some of these chemicals have potential pharmaceutical applications, including anti-cancer, anti-malaria and pain control (analgesics). In fact the major reason why our knowledge of sponges has escalated over the past few decades is directly due to the increasing interest in their pharmaceutical properties.