Question

Blue coloured blood is present in which of the following
a) frog
b) blue whale
c) shark
d) snail

Answer 1

$\large{\bold{Hey}}$
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$\textbf{Q.}$ Blue coloured blood is present in which of the following ?
a) frog
b) blue whale
c) shark
d) snail

$\textbf{Answer:}$$\textbf{\underline{Option (d) Snail}}$

$\textbf{\underline{Reason:}}$

Snail is a mollusc and molluscs have the pigment called haemocyanin in their blood. Hence, their blood is blue in colour.

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Answer 2

Explanation:

Squid, Octopus, Horseshoe crab and certain insects and their larval stages have blue coloured blood. The reason for the blue colour is that they have the protein 'Haemocyanin' whereas the vertebrates have 'Haemoglobin'. Both these proteins assist in oxygen transport in the body.