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In a sea shore, the benthic animals live...

In a sea shore, the benthic animals live in sandy, muddy and rocky substrate and accordinagly developed the following adaptations.
(a) Burrowing
(b) Building cubes
`(c)`Holdfasts/peduncle
Find the suitable substratum against each adaptation.

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In a sea shore, the benthic animals adapt to their mode of life according to the nature of sea floor e.g.
(a) Benthic animals become fossorial (burrowing) in sandy substratum.
(b) Benthic animals build cubes in muddy substratum.
(c) Benthic animals develop holdfast/peduncle, if substratum is rocky.
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