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One of the following is a connecting link between protozoans and poriferans

One of the following is a connecting link between protozoans and poriferans

Options

(a) cliona
(b) leucosolenia
(c) oscarella
(d) proterospongia

Correct Answer:

proterospongia

Explanation:

Protospongia is a single-celled acquatic organism which form colonies. It shows primitive level of cell differentiation or specilization for different activity. Whereas others in the options such as cliona, leucosolenia, oscarella are multicellular sponges. Hence, proterospongia is considered as a connecting link between protozoans and poriferans.

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View Comments (2)

  • It is connecting organism because it has both charectors of poriferra and protozoa but kept in poriferra due to presense of more pores and similar charectors

  • proterospongia it is an member of protozoa kingdom protista but cells show the feature of choanocyte cells present in porifera

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