Mollusca and Annelida Quiz

What does "Annelida" mean

• Little Rings

• Many Rings

• Big Rings

• Rings

Where do Annelids live?

• Marine environments only

• Damp soil only

• Freshwater only

• Marine environments, Freshwater or Damp soi

Members of Oligochaeta are

• segmented worms with no parapodia but with chaetae; all have a reduced head

• marine, tube-dwelling and free living, segmented worms with a well developed head, parapodia and chaetae

• Leeches with a flattened body and reduced coelom; no chaetae; suckers at the anterior end; all are parasites, predators and scavengers

Members of Polychaeta are

• segmented worms with no parapodia but with chaetae; all have a reduced head

• marine, tube-dwelling and free living, segmented worms with a well developed head, parapodia and chaetae

• Leeches with a flattened body and reduced coelom; no chaetae; suckers at the anterior end; all are parasites, predators and scavengers

Members of Hirudinea are

• segmented worms with no parapodia but with chaetae; all have a reduced head

• marine, tube-dwelling and free living, segmented worms with a well developed head, parapodia and chaetae

• Leeches with a flattened body and reduced coelom; no chaetae; suckers at the anterior end; all are parasites, predators and scavengers

Farmers value earthworms

• because they till the soil and their castings improve the soil texture

• for their ability to produce meat

• as a source of carbon

Which of the following best describes Earthworm sex

• Earthworms are hermaphrodites that cross fertilize by aligning themselves side-by-side to exchange sperm.

• Earthworms have distinct male and female organisms. Females leave their eggs in the soil, where the male finds the eggs and fertilizes them.

• Earthworms have distinct male and female organisms. As a species they use broadcast spawning in damp soil.

• Earthworms are hermaphrodites that self-fertilize, leaving eggs behind in the soil

Parapodia are

• paddle-like or ridge-like structures that function in locomotion

• paddle-like or ridge-like structures that function in reproduction

• cell extensions that assist in feeding

• cell extensions that assist in reproduction

Which best describes how parasitic leeches suck blood?

• The leech uses bladelike jaws to slit the skin of the host, secretes an anesthetic to numb the host skin to the injury, secretes hirudin to keep the blood from clotting, and then sucks as much blood as it can hold.

• The leech uses enzymes to digest the skin, attaches with its scolex, and suck blood until the host notices the attachment.

• The leech uses it bladelike jaws to slit the skin of the host, attaches to the host with its muscular jaws, and refuses to release until the host notices.

Which part of the Mollusk body is the tissue covering the body and secretes the shell?

• Mantle
• Trochophore
• Foot
• Visceral Mass