Q.45 In a seashore, the benthic animals live in sandy, muddy and rocky strata and accordingly developed the following adaptations.
(a) Burrowing
(b) Building cubes
(c) Holdfasts/peduncle
Find a suitable substratum against each adaptation.
Ans. In a seashore, water current restricts the distribution of organisms. in streamed areas of the ocean, animals are strong swimmers or possess attaching organs such as peduncles, or live under a stone, in burrows, etc.
Burrowing animals like tubeworms, Nerties are strong swimmers. Burrowing, building cubes, and holdfast or peduncle adaptation are found in sandy, muddly and rocky substratum respectively.
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