Movement
The earthworm moves by muscular contraction.
Respiration
Oxygen is carried to the cells by blood.
Protection
The skin is metamerismic (segmental)
along the body. It is usually moist.
Support
There is no skeleton.
There is no skeleton.
Circulation
There is a closed circulatory system.
There are a series of interconnected
tubes which food moves through rapidly.
There are five pairs of vessel/hearts.
Reproduction
Reproduction is hermaphroditic.
The cross-fertilized egg develops in the soil.
Pinegreenwoods Montessori
Montessori Zoology
