TTU BIOL 1404 Lab Practical Exam
Questions & Answers (Grade A+)
Cocoon -
correct answer ✅Sac in which eggs and hatchlings are nourished
until they are ready to emerge.
Sperm Receptacles -
correct answer ✅Take in sperm from another mate (earthworms).
Seminal Vesicles -
correct answer ✅Produce, store and release sperm via males
pores.
Setae -
correct answer ✅A stiff hairlike or bristle-like structure; anchors
and controls the worm when moving through soil.
Esophagus -
correct answer ✅Contains calciferous glands that release calcium
carbonate to rid worm's body of excess calcium.
Crop -
correct answer ✅Thin walled organ, temporarily stores food.
, TTU BIOL 1404 Lab Practical Exam
Questions & Answers (Grade A+)
Gizzard -
correct answer ✅Muscular organ where food is forced from the
crop. Grains of sand grind up food particles.
Intestine -
correct answer ✅Enzymes chemically break down food and blood
circulating through intestine walls absorbs it.
Dorsal Blood Vessel -
correct answer ✅Returns blood to the heart.
Ventral Blood Vessel -
correct answer ✅Pumps blood to the posterior.
Aortic Arches -
correct answer ✅Function like human heart, pump blood.
Ventral Nerve Cord and Ganglia -
correct answer ✅Ventral Nerve Cord carries signals from Ganglia
which can process and give instructions to each segment
independently.
Questions & Answers (Grade A+)
Cocoon -
correct answer ✅Sac in which eggs and hatchlings are nourished
until they are ready to emerge.
Sperm Receptacles -
correct answer ✅Take in sperm from another mate (earthworms).
Seminal Vesicles -
correct answer ✅Produce, store and release sperm via males
pores.
Setae -
correct answer ✅A stiff hairlike or bristle-like structure; anchors
and controls the worm when moving through soil.
Esophagus -
correct answer ✅Contains calciferous glands that release calcium
carbonate to rid worm's body of excess calcium.
Crop -
correct answer ✅Thin walled organ, temporarily stores food.
, TTU BIOL 1404 Lab Practical Exam
Questions & Answers (Grade A+)
Gizzard -
correct answer ✅Muscular organ where food is forced from the
crop. Grains of sand grind up food particles.
Intestine -
correct answer ✅Enzymes chemically break down food and blood
circulating through intestine walls absorbs it.
Dorsal Blood Vessel -
correct answer ✅Returns blood to the heart.
Ventral Blood Vessel -
correct answer ✅Pumps blood to the posterior.
Aortic Arches -
correct answer ✅Function like human heart, pump blood.
Ventral Nerve Cord and Ganglia -
correct answer ✅Ventral Nerve Cord carries signals from Ganglia
which can process and give instructions to each segment
independently.
