Animal Characteristics Quiz

Which characteristic is common to all animals?

• Autotrophic

• Multicellular and heterotrophic

• Cell walls

• Photosynthesis

The process of concentrating nerve tissue and sensory organs in the head region is called:

• Segmentation

• Cephalization

• Symmetry

• Differentiation

Which type of body symmetry allows for division into two equal halves along one plane?

• Asymmetry

• Radial symmetry

• Bilateral symmetry

• Circular symmetry

Which phylum includes animals with a soft body and often a shell, like snails and squids?

• Arthropoda

• Mollusca

• Annelida

• Echinodermata

Which type of body cavity is fully lined with mesoderm tissue?

• Acoelomate

• Pseudocoelomate

• Coelomate

• Hydroskeleton

Which system evolved first to transport nutrients and remove waste in more complex animals?

• Skeletal system

• Circulatory system

• Nervous system

• Respiratory system

What type of skeleton do earthworms have?

• Exoskeleton

• Endoskeleton

• Hydrostatic skeleton

• Cartilage skeleton

In which group did lungs first evolve?

• Fish

• Amphibians

• Reptiles

• Mammals

Which system defends the body against pathogens in vertebrates?

• Nervous system

• Circulatory system

• Immune system

• Digestive system

Which invertebrate phylum is characterized by radial symmetry and stinging cells?

• Porifera

• Annelida

• Cnidaria

• Mollusca