Multiple choice

How do arachnids like spiders and whip scorpions extend their limbs?

  1. Thickening in the joint muscle

  2. Pressure of hemolymph

  3. Special muscles

  4. Elastic recoil

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Spiders and whip scorpions extend their limbs hydraulically using the pressure of their hemolymph.