Question

Which is the largest phylum of animal kingdom .​

Answer 1

Answer

Arthopoda

Explaination:

An arthropod is an invertebrate animal.

• It have an exoskeleton.
• it has a segmented body.
• and paired jointed appendages

Answer 2

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Largest phylum of animal kingdom :

✴ " Arthropoda "is the largest phylum of animal kingdom..

General characteristics of the Arthropoda :

✴The meaning of Arthropoda refers to jointed legs...

✴It shows bilateral symmetry.

✴Segmentation is seen in this phylum..

✴ The exoskeleton of Arthropods is made of chitin..

✴The body cavity is filled with the fluid called haemocoel..

✴This is colourless because of the absence of haemoglobin.

Physiological functions in this phylum :

✴ They have complete digestive system with mouth and anus.

✴Respiration is by the moist surface of the skin in some and by gills in aquatic forms and by trachea in terristial form.

✴Excretion is through " Malphigian Tubules " in some..

✴ Circulatory system is Open type..

Examples of Arthropods :

✴Coackroach (periplanata Americana)

✴Limulus (king crab)

✴Spiders (Aranae)

✴scorpions...

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