Is octopus an unicellular animal?
Are the following statements right or wrong?
Change the underlined words to correct the wrong ones.
(a) Octopus is an aquatic animal.
(b) Amphibians live both in air and in water.
(c) The function of the brain is more developed in vertebrate animals.
(d) Amoeba is a multi-cellular animal.
A bear is a ___ (unicellular/multicellular) animal.