Invertebrates
Vertebrates
Evolution
Anatomy
Just Critters
100

Invertebrates do not have this.

What is a backbone?

100

Vertebrates have this at some point in their lifetime.

What is a backbone?

100

Believed to be the first animal to arise on the planet.  Some can be used during hygiene sessions.

What is a sponge?

100

An arm, leg, fin, or wing.  These tend to be found in pairs.

What is an appendage?

100

A remarkable organism that uses sea water as its body fluid making this critter quite unique.

What is a starfish, or sea star?

200

Group of invertebrates that includes snails, clams, and the sea cucumber.

What are mollusks?

200

Group of vertebrates that are ectotherms and are covered with scales including: turtles, snakes, and lizards.

What are reptiles?

200

On the vertebrate evolutionary tree, the group of organisms that arose after the nonvertebrate chordates.

What are fishes?

200

Endothermy is a characteristic of birds and mammals. It provided them the ability to disperse all over Earth after the Age of the Dinosaurs ended with the KT Event.  It is also known as this.

What is warm-blooded?

200

The fastest land animal.  This amazing critter can reach speeds of over 150 mph when it chases its prey.

What is a peregrine falcon?

300

Group of invertebrates with jointed appendages including spiders, insects, shrimp, and ticks.

What are arthropods?

300

An egg with a shell that helped animals survive and adapt to life on land. It has parts named the amnion and chorion.

What is an amniotic egg?

300

The most sophisticated group on the invertebrate evolutionary tree.

What is an echinoderm (starfish)?

300

Anatomical part that is exclusive to life on land.  It would be analogous to the gill in an aquatic organism.

What are lungs?

300

A keystone species that was critical in the Yellowstone National Park.  Most domestic dog species were bred from this critter.

What is a wolf?

400

Invertebrates have 3 types of skeletons.  Two examples of these support systems would be.

What are hydrostatic skeleton, endoskeleton, exoskeleton?

400

Amphibians including frogs, toads, salamanders, and caecilians are known as transition species on the evolutionary tree for this reason.

What is a life in water and on land?

400

On the vertebrate animal tree the group that would be found to have arisen after the fish.

What are amphibians (frogs, toads, salamanders, and caecilians)?

400

Anatomical part that divides fishes into two large groups, those that have it and those that don't.  Also name of a box office thriller in the theatrical world.

What are jaws?

400

This cephalopod is an incredible critter with eyes like yours, multiple appendages, the ability to problem solve, and color change indicating its mood.  It also can hide itself very well by camouflage.

What is an octopus?

500

Invertebrates tend to reproduce asexually.  This means it involves only 1 parent.  The three types are.

What are regeneration, budding, and binary fission?

500

As biology typically is, there is an exception to the rule of all vertebrates having a backbone in the nonvertebrate chordates.  These are the most primitive of the group.  Two examples are.

What are tunicates and lancelets?

500

According to scientists, the human was the last organism to evolve following a mutation in the Primates that provided it with these two distinct differences compared to other animals.

What are advanced logical thinking skills and verbal communication in the form of language?

500

The three germ layers of the body.  They end up on a mature critter as the skin, linings of internal organs, and the tissues found between the first two items in this list like bone and muscle.

What are the ectoderm, mesoderm, and endoderm.

500
Just a critter that was once thought to be extinct until one was caught off the coast of Africa.  It has a group on the vertebrate cladogram including only it.  Its fins look much like legs.

What is a coelacanth? 

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