Question

identify the given living organisms and write any one characteristic of phylum to which this organism belongs.​

Answer 1

The given living organisms is OCTOPUS.

• Octopus belongs to phylum MOLLUSCA.

Characteristics features of Mollusca Phylum:

• It is the 2nd largest phylum in the animal kingdom.

• They show ORGAN-SYSTEM level of organisation.

• Their habitat is mainly in the marine and freshwaters.

• They have open circulatory system.

• Meta-nephidia helps them in excretion.

• Nervous system contains ganglia (paired) and nerves.

• Majority of them are uni-sexual (i.e. sexes are different), but some species are hermaphrodites.

• Body cavity is present.

• Respiration occurs through body surface, gills and pulmonary sacs.

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