A holdfast is a root-like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate.
B. Roundworms<span>.
The Protostome organisms are subclustered into three main groups,
moreover nematoda or roundworms belongs to the Ecdysozoa group.</span>
<span>Roundworms are organisms that are diverse and almost in clustered to many other ecosystems and environment.
These
Protostome includes mollusks, annelids, and arthropods
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Macrophages
Using the receptors on their surface and through the facilitation by immunoglobulins that attach to the foreign matter, macrophages 'hold' the foreign bodies in the body and 'ingest' them through phagocytosis. Lysozymes in the cells then in 'digest' the foreign matter.
Definitely not long, I’m not sure the exact time, look it up