Name: Taxonomical Aids
Uploaded: 2019-07-19
Duration: 8 min 52 s
Description: Our planet earth is teeming with about 8.7 million species of living organisms. Taxonomic aid is required for correct identification, classification and stud...

Question

Give the phylum characters of Pila and Rohu.

Accepted Answer

Pila is also known as apple snail. It belongs to the second largest phylum Mollusca. Rohu belongs to the phylum Chordata.

Characteristics of phylum Mollusca:

The body of organisms remains enclosed inside a spirally coiled, calcareous shell.

Opening of the shell remains closed with a calcareous plate known as the operculum.

The body is unsegmented with bilateral symmetry.

The body is divided into head, muscular foot, visceral mass, and mantle.

The circulatory system is an open type with the heart, arteries, and veins.

Respiration is through the body surface, having respiratory pigment as hemocyanin.

The nervous system is developed with the brain, ganglia, and connectives.

Sensory organs are present like compound eyes, osphradium, statocysts, and tentacles.

Characteristics of phylum Chordata:

They have notochord in different stages of life.

A nerve cord is present which is dorsal, hollow, and tubular.

Pharyngeal slits are found in pairs at some stage of life.

They have a true post-anal tail comprising bone.

The circulatory system is of closed type with the heart, arteries, veins, and capillaries.

The body is triploblastic and bilaterally symmetrical.

They have a complete digestive system.

Males and females are separate and a sexual mode of reproduction is found.

Give the phylum characters of Pila and Rohu.

Important Questions on Classification of living organism

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