Question 1

Members of the class Monoplacophora were believed extinct until some living specimens were found off the coast of Costa Rica in 1952.

Accepted Answer

A) True 
 B)False

Question 2

Concerning reproduction in Bivalvia,

Accepted Answer

A) they tend to be hermaphroditic. 
B) fertilization is usually external. 
C) development is direct (no larva). 
D) the adult stage is called a glochidium. 
A) they tend to be hermaphroditic. 
B) fertilization is usually external. 
C) development is direct (no larva). 
D) the adult stage is called a glochidium.

Question 3

The shell of a mollusc is rich in the element _____________.

Accepted Answer

The answer of The shell of a mollusc is rich...

Question 4

Most cephalopods can move by a kind of jet propulsion by expelling water through their _____________.

Accepted Answer

The answer of Most cephalopods can move by a kind...

Question 5

The molluscs are the second most diverse phylum known.

Accepted Answer

A) True 
 B)False

Question 6

The Polyplacophora are commonly called _______.

Accepted Answer

The answer of The Polyplacophora are commonly called _______....

Question 7

Some bivalves have an operculum which prevents drying when the tide goes out.
Multiple Choice Questions

Accepted Answer

A) True 
 B)False

Question 8

There are two hypotheses that explain molluscan evolution.In the _______ hypothesis,the wormlike body is the ancestral trait,but in the ______ hypothesis the multiple foot retractor muscles would be the ancestral trait.

Accepted Answer

The answer of There are two hypotheses that explain molluscan...

Members of the class Monoplacophora were believed extinct until some living specimens were found off the coast of Costa Rica in 1952.

Concerning reproduction in Bivalvia,

The shell of a mollusc is rich in the element _____________.

Most cephalopods can move by a kind of jet propulsion by expelling water through their _____________.

The molluscs are the second most diverse phylum known.

The Polyplacophora are commonly called _______.

Some bivalves have an operculum which prevents drying when the tide goes out. Multiple Choice Questions

There are two hypotheses that explain molluscan evolution.In the _ hypothesis,the wormlike body is the ancestral trait,but in the hypothesis the multiple foot retractor muscles would be the ancestral trait.

Science of Zoology and Evolution of Animal Diversity

Animal Ecology

Animal Architecture

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges: Phylum Porifera

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa: Flatworms, Gastrotrichs, Gnathiferans, and Mesozoans

Polyzoa and Kryptrochozoa: Cycliophora, Entoprocta, Ectoprocta, Brachiopoda, Phoronida, and Nemertea

Annelids and Allied Taxa

Smaller Ecdysozoans

Arthropods

Chaetognaths, Echinoderms, and Hemichordates

Vertebrate Beginnings: the Chordates

Fishes

The Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Filters

Exam 10: Molluscs

Members of the class Monoplacophora were believed extinct until some living specimens were found off the coast of Costa Rica in 1952.

Concerning reproduction in Bivalvia,

The shell of a mollusc is rich in the element _____________.

Most cephalopods can move by a kind of jet propulsion by expelling water through their _____________.

The molluscs are the second most diverse phylum known.

The Polyplacophora are commonly called _______.

Some bivalves have an operculum which prevents drying when the tide goes out. Multiple Choice Questions

There are two hypotheses that explain molluscan evolution.In the _______ hypothesis,the wormlike body is the ancestral trait,but in the ______ hypothesis the multiple foot retractor muscles would be the ancestral trait.

Science of Zoology and Evolution of Animal Diversity

Animal Ecology

Animal Architecture

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges: Phylum Porifera

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa: Flatworms, Gastrotrichs, Gnathiferans, and Mesozoans

Polyzoa and Kryptrochozoa: Cycliophora, Entoprocta, Ectoprocta, Brachiopoda, Phoronida, and Nemertea

Annelids and Allied Taxa

Smaller Ecdysozoans

Arthropods

Chaetognaths, Echinoderms, and Hemichordates

Vertebrate Beginnings: the Chordates

Fishes

The Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Filters

There are two hypotheses that explain molluscan evolution.In the _ hypothesis,the wormlike body is the ancestral trait,but in the hypothesis the multiple foot retractor muscles would be the ancestral trait.