Lophotrocozoa
Ecdysozoa
Fish
Tetrapods
Other
100

These three parts compose the soft bodies of organisms in phylum mollusca.

What are the foot, visceral mass, and mantle?

100

This characteristic is shared by almost all Ecdysozoans and leads to a form of shedding as they grow.

What is the cuticle?

100

This structure is present in bony fish allows for buoyancy without the need to be actively swimming.

What is the swim bladder?

100

The word squamates refers these two types of organisms.

What are lizards and snakes?

100

This organism retains all 4 chordate characteristics throughout its all life.

What are lancelets? (What is cephalochordata)

200

This class of phylum mollusca contains organisms with 8 dorsal plates that suction onto rocks and found in tidepools.

What is Class Polyplacophora?

200

These specialized limbs can modified for different functions like for reproduction or feeding, and are found in arachnids.

What are pedipalps?

200

This type of fish has both lungs and gills and can drag itself across shallow water with its lobe shaped fins.

What is a lungfish?

200

This feature is primates is typically associated with predators and allows for depth perception.

What are forward facing eyes?

200

This part of the amniotic egg stores waste and helps form the umbilical chord in mammals.

What is the Allantois?

300

This phylum of worms is acoelomate, or doesn't have a body cavity.

What is Phylum Platyhelminthes?

300

An organism with 3 pairs of walking legs and wings is most likely a part of this subgroup of Phylum Arthropoda.

What are insects?

300

This terms describes how some sharks keep their eggs in the womb until they hatch and then give birth to live young.

What is Ovoviviparous?

300

These bones are found only in birds and are used as anchors for flight muscles.

What are the wishbone and keel?

300

This term describes animals which use their metabolic activity to regulate their body temperature. 

What are Endotherms?

400

These pigment dots in the skin of some cephalopods allow for camouflage.

What are chromatophores?

400

This terms refers to organisms which eat decaying plant materials and describes many organisms in the diplopoda group.

What are detritovores?

400

This term describes the grouping of jawless fish which have cartilage-based skeletons and include hagfish and lampreys.

What are Cyclostomes?

400

What reptile subgroup are dinosaurs a part of?

What are archosaurs?

400

These cells assist with digestion in sponges and produce important materials like spongin.

What are amoebocytes? 

500

This clade of segmented worms are typically burrowing or tube-dwelling and include organisms like leeches.

What are sedentarians?

500

These organisms are small but aggressive carnivores, have many legs and can be poisonous.

What are centipedes (chilopods)?

500

This structure evolved from the pharyngeal gill slits and is found only in gnathostomes.

What are jaws?

500

This group of human ancestors arose about 4 mya and were bipedal also still mostly arboreal.

What are Australopiths?

500

This group contains animals with calcareous endoskeletons, bilateral symmetry as adolescents, and spiny skin.

What is Echinodermata?