Arthropoda

Germinal or embryonic layers

• Diploblastic

• Triploblastic

Nature of coelom

• Acoelomate

• Pseudocoelomate

• Eucoelomate

Level of organisation

• Cellular

• Tissue

• Organ

• Organ system

Symmetry in Arthropods

• Asymmetrical

• Radial symmetry

• Bilateral symmetry

Over _______ of all named species belong to phylum Arthropoda

• One-third

• Two-third

• Three-fourth

• One fourth

The word Arthropoda means

• Insects

• Joined appendages

• Multiple appendages

Their segmented bodies consist of

• Head

• Body

• Thorax

• Abdomen

Their exoskeleton is made up of

• Calcium carbonate

• Chitin

• Bone

• Cartilage

Their sensory organs include

• Eyes

• Statocysts

• Antennae

• Antlers

Circulatory system is

• Open

• Closed