Question

Give some characteristics of Arthropoda

Answer 1

Characteristics shared by all arthropods include:

• Exoskeletons made of chitin.

• Highly developed sense organs.

• Jointed limbs (the limbs must be jointed like the joints in a suit of armor, since the exoskeleton is rigid and cannot bend to allow movement)

• Segmented bodies.

• Ventral nervous system.

• Bilateral symmetry.

BY ABHISHEK

Answer 2

$\huge{\underline{\underline{\sf{Arthropoda-}}}}$

• It is known as the largest phylum.

• Produce a large number of eggs.

• Stored in a cage like structure called ootheca. [Capsule like structure for protection of eggs].

• Exoskeleton is made up of chitin. [N - acetyl glucosamine].

• These are having joint appendages.

• These are having three pairs of legs.

• Bilateral Symmetry is present.

• These are triploblastic.

• These are coelomate.

• These are having open circulatory system.

• These are segmented.

• Their body is divided into three parts - Head, thorax, abdomen.

• Their sensory organ is Antenna.

• Their balancing organ is statocyte.

• Excretion is done through malphigion tubules.

• Respiration - Gills, book gills, lungs, book lungs, trachea.

• Reproduction mode is sexual - Internal. (Direct or indirect development).

• Example - Cockroach, locusts.