These questions will help you prepare for the lesson quiz. Be sure to read the feedback carefully for any questions you answer incorrectly, and review those topics before leaving this lesson and taking the quiz.
Which of the following mollusks are classified as Gastropods?
- snails
- oysters
- octopuses
- squids
Gastropods include snails and slugs. Octopuses and squids are cephalopods, and oysters are bivalves.
Gastropods include snails and slugs. Octopuses and squids are cephalopods, and oysters are bivalves.
Gastropods include snails and slugs. Octopuses and squids are cephalopods, and oysters are bivalves.
Gastropods include snails and slugs. Octopuses and squids are cephalopods, and oysters are bivalves.
Which of the following is a mollusk larvae?
- hermaphrodite
- mantle
- trochophore
- valve
All mollusk fertilized eggs eventually develop into a trochophore, a ciliated free-swimming larva.
All mollusk fertilized eggs eventually develop into a trochophore, a ciliated free-swimming larva.
All mollusk fertilized eggs eventually develop into a trochophore, a ciliated free-swimming larva.
All mollusk fertilized eggs eventually develop into a trochophore, a ciliated free-swimming larva.
Which of the following best describes the job of the nephridia in mollusks?
- Nephridia are a modified foot that help mollusks move.
- Nephridia help octopuses move by jet propulsion.
- Nephridia are tongue-like structures in mollusks.
- Nephridia release fluid waste from the coelom.
The nephridia take up fluid waste from the coelom. Nutrients are reabsorbed into the mollusk from the fluid in the nephridia. The nephridia then releases the waste through an opening into the mantle cavity.
The nephridia take up fluid waste from the coelom. Nutrients are reabsorbed into the mollusk from the fluid in the nephridia. The nephridia then releases the waste through an opening into the mantle cavity.
The nephridia take up fluid waste from the coelom. Nutrients are reabsorbed into the mollusk from the fluid in the nephridia. The nephridia then releases the waste through an opening into the mantle cavity.
The nephridia take up fluid waste from the coelom. Nutrients are reabsorbed into the mollusk from the fluid in the nephridia. The nephridia then releases the waste through an opening into the mantle cavity.
Which of the following describes the radula of mollusks?
- It is a modified foot that secretes a mucus to allow for gliding around on land.
- It is a tongue-like structure with backward curving teeth located in the mouth.
- It is a tube where nutrient absorption takes place and fluid waste is excreted.
- It is a structure that releases water quickly as a means of jet propulsion.
The radula is a tongue-like structure in the mouths of mollusks. On its surface are backward curved teeth that help scrape food off of rocks.
The radula is a tongue-like structure in the mouths of mollusks. On its surface are backward curved teeth that help scrape food off of rocks.
The radula is a tongue-like structure in the mouths of mollusks. On its surface are backward curved teeth that help scrape food off of rocks.
The radula is a tongue-like structure in the mouths of mollusks. On its surface are backward curved teeth that help scrape food off of rocks.
Which best describes the siphon in mollusks?
- It is a body cavity in which all the organs rest and contains a fluid that bathes the organs in nutrients and organic molecules.
- It is a mollusk larva that develops from a fertilized egg and has cilia surrounding its body to help it swim freely .
- Is is a tongue-like structure with backward curved teeth that is inside the mouth of mollusks and scrapes rock for food particles.
- It is a structure that water shoots out of to propel the mollusk, and it releases dark liquid in some squids and octopuses.
The siphon is a structure that shoots out water in mollusks. It assists the mollusk in moving away from danger quickly. Some squids and octopuses release a dark fluid from their siphon.
The siphon is a structure that shoots out water in mollusks. It assists the mollusk in moving away from danger quickly. Some squids and octopuses release a dark fluid from their siphon.
The siphon is a structure that shoots out water in mollusks. It assists the mollusk in moving away from danger quickly. Some squids and octopuses release a dark fluid from their siphon.
The siphon is a structure that shoots out water in mollusks. It assists the mollusk in moving away from danger quickly. Some squids and octopuses release a dark fluid from their siphon.
Which of the following classes belongs to phylum Mollusca?
- Cephalopoda
- Hexactinellida
- Scyphozoa
- Hydrozoa
The three most common classes of phylum Mollusca are Cephalopoda, Gastropoda, and Bivalvia. Hexactinellida is a class of sponges belonging to phylum Porifera. Scyphozoa and Hydrozoa are both classes in phylum Cnidaria.
The three most common classes of phylum Mollusca are Cephalopoda, Gastropoda, and Bivalvia. Hexactinellida is a class of sponges belonging to phylum Porifera. Scyphozoa and Hydrozoa are both classes in phylum Cnidaria.
The three most common classes of phylum Mollusca are Cephalopoda, Gastropoda, and Bivalvia. Hexactinellida is a class of sponges belonging to phylum Porifera. Scyphozoa and Hydrozoa are both classes in phylum Cnidaria.
The three most common classes of phylum Mollusca are Cephalopoda, Gastropoda, and Bivalvia. Hexactinellida is a class of sponges belonging to phylum Porifera. Scyphozoa and Hydrozoa are both classes in phylum Cnidaria.
Summary
Questions answered correctly:
Questions answered incorrectly:
