Name TEACHER
How do Lumbriculus variegatus and Lumbriculus terrestris
undergo the life processes?
Life Process
Take In
Nutrients
Produce Waste
Lumbriculus Variegatus
Lumbriculus terrestris
1. Blackworm has a digestive and
circulatory system which job is
to transport nutrients, oxygen,
and waste from the body
Eats soil, decaying leaves
and bacteria
1. Blackworm has a digestive and
circulatory system which job is
to transport nutrients, oxygen,
and waste from the body
Digestive system
Digestive System
Castings
2. Holds tail out of water for gas
exchange
1. Photoreceptors ( nerve cells in
tail)
Respond to
Environment
2. Shortens tail
3. Moves in corkscrew fashion
1. Regeneration- any fragment can
regenerate ( light part is
regenerated part)
1. Reproduce Sexually
2. Clitellum creates
mucus for eggs
Reproduce
2. asexual
Movement
Takes in oxygen
1. Chaetae tiny hairs that help the
blackworm cling to the mud and
move
2. Move in corkscrew motion
Holds tail out of water for gas exchange
Setae
1. Body has between 150-250
segments
2. Can regenerate
3. 10 cm long
Grow
Made of Cells
Blackworms are made of cells
Die
1. Body has 150
segments
2. 25 centimeters
Earthworms are made of
cells
1. Can die from being taken out of
the water
2. Do not die from being cut in half
New Vocabulary:
1. Anterior near or toward the head
2. Posterior near or towards the tail
3. Regeneration process by which certain organisms produce new body parts
4. Photoreceptors- nerve cells on worm’s tail able to detect shadows
5. Asexual reproduction- process by which new organisms are formed from a
single parent