Q 01/05

Spiders belong to which order?

A) Araneae

B) Acari

C) Scorpiones

D) Opiliones

Answer · why

A) Araneae

Araneae is the order of spiders, with more than 50,000 described species placed in over 130 families worldwide.

Q 02/05

Which is the only continent with no spiders?

A) Australia

B) South America

C) North America

D) Antarctica

Answer · why

D) Antarctica

Antarctica is the only continent with no spiders; every other continent has them, including a jumping spider recorded on Everest's slopes above 6,000 ...

Q 03/05

Unlike insects, spiders lack which sensory feature on their heads?

A) Antennae

B) Eyes

C) Mouthparts

D) Hairs

Answer · why

A) Antennae

Spiders have no antennae; insects smell and feel with antennae, while spiders rely on sensory hairs and slit organs spread over their legs and body.

Q 04/05

How do spiders extend their legs, since they have no extensor muscles?

A) Elastic tendons

B) Twisting the joints

C) Muscles in the abdomen

D) Hydraulic pressure

Answer · why

D) Hydraulic pressure

Hydraulic pressure: spiders extend their legs by pumping hemolymph into them, since two leg joints have no extensor muscles; a dead spider's legs curl...

Q 05/05

Which jumping spider was first reported in 2008 to feed mostly on plant matter?

A) Portia fimbriata

B) Maratus volans

C) Bagheera kiplingi

D) Phidippus audax

Answer · why

C) Bagheera kiplingi

Bagheera kiplingi, a Central American jumping spider, gets most of its food from protein-rich leaf-tip nubs grown by an ant-guarded tree; no other spi...