Q 01/05

Which sea creature's bright blue blood is harvested to test medicines for dangerous bacterial toxins?

A) Alaskan king crab

B) Horseshoe crab

C) Giant isopod

D) Sea spider

Answer · why

B) Horseshoe crab

The horseshoe crab has blood containing a chemical that reveals bacterial toxins, which drug makers rely on. Despite the name, the animal is closer to...

Q 02/05

Which creature that rolls into a ball under garden logs is a crustacean rather than an insect?

A) Earwig

B) Silverfish

C) Springtail

D) Pill bug

Answer · why

D) Pill bug

The pill bug is a woodlouse, a land-living relative of crabs and shrimp. It loses water quickly, which is why it keeps to damp, dark places such as th...

Q 03/05

Which blood-feeding parasite that spreads Lyme disease is an eight-legged arachnid, not an insect?

A) Tick

B) Flea

C) Louse

D) Bedbug

Answer · why

A) Tick

The tick belongs to the same class as spiders and mites, and an adult has eight legs. Fleas, lice and bedbugs are all six-legged insects.

Q 04/05

The first animal ever found with more than a thousand legs lives deep underground in which country?

A) Brazil

B) Madagascar

C) Australia

D) China

Answer · why

C) Australia

Australia produced the record-breaker from mining drill holes up to 60 meters deep: an eyeless, thread-like animal with as many as 1,306 legs. The pre...

Q 05/05

Meganeura, an extinct insect with a 70-centimeter wingspan, resembled which living insects?

A) Dragonflies

B) Grasshoppers

C) Lacewings

D) Mayflies

Answer · why

A) Dragonflies

Dragonflies are the closest living look-alikes of Meganeura, which hunted other insects about 300 million years ago. The biggest modern species is far...