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Cirral activity of two barnacles in rela...

Cirral activity of two barnacles in relation to temperature are given above, which one of the following is the most appropriate explanation of the figure ?

A

Both the barnacles maintain their activity under narrow range of temperatures.

B

Both the species are more active above `20^@C`.

C

There is a rapid depression of activity when temperature increases above `6^@C`.

D

Upper intertidal species show greater thermal tolerance than lower intertidal species.

Text Solution

Verified by Experts

The correct Answer is:
D
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