The alternation of circular muscle contraction and longitudinal muscle contraction allows the earthworm to move forward. What type of support system aids locomotion in the earthworm?

A. an endoskeleton
B. a hydrostatic skeleton
C. a calcium carbonate shell
D. an exoskeleton


Answer: B

Biology & Microbiology

You might also like to view...

The majority of meteorite finds are iron meteorites

a. True b. False Indicate whether the statement is true or false

Biology & Microbiology

Which action that spreads pathogens is the simplest to prevent?

1.inhalation 2.indirect contact 3.contact with a vector 4.direct contact

Biology & Microbiology

West Nile virus is transmitted by (food/mosquitoes/water)

What will be an ideal response?

Biology & Microbiology

Mangrove trees have specialized ____ to stabilize the plant in ____

a. roots, mud b. holdfast, rocks c. roots, rocks d. holdfast, mud e. roots, sand

Biology & Microbiology