Question 1

In brittle stars,water circulates into the _______________ for gaseous exchange.

Accepted Answer

The answer of In brittle stars,water circulates into the _______________...

Question 2

Clade Ambulacraria contains two deuterostome phyla: Echinodermata and ____________.

Accepted Answer

The answer of Clade Ambulacraria contains two deuterostome phyla: Echinodermata...

Question 3

Outline the phylogeny and adaptive diversification of the hemichordates and discuss the latest data of small subunit rRNA supporting a deuterostome phylogeny for this group.

Accepted Answer

Hemichordates are a group of marine inve

Question 4

The echinoids

Accepted Answer

A) have five long,slender arms. 
B) are enclosed in an endoskeletal test or shell. 
C) lack tube feet. 
D) lack ambulacral areas. 
E) are unable to move because of their spines. 
A) have five long,slender arms. 
B) are enclosed in an endoskeletal test or shell. 
C) lack tube feet. 
D) lack ambulacral areas. 
E) are unable to move because of their spines.

Question 5

________________ is the porous plate on the aboral surface where water enters the water vascular system of a sea star.

Accepted Answer

The answer of ________________ is the porous plate on the...

Question 6

These odd little echinoderms were formerly considered a class of their own.They possess tube feet distributed around the periphery of their disclike body and belong to the group ___________.

Accepted Answer

The answer of These odd little echinoderms were formerly considered...

Question 7

The ________________ live in secreted tubes on the ocean bottom.

Accepted Answer

The answer of The ________________ live in secreted tubes on...

Question 8

The madreporite of sea cucumbers is located in the ________________.

Accepted Answer

The answer of The madreporite of sea cucumbers is located...

Question 9

Sea stars reproduce mostly

Accepted Answer

A) by budding. 
B) only asexually by intentionally breaking off appendages. 
C) sexually,usually with separate sexes. 
D) sexually,with both sex organs on same organism,similar to earthworms,with cross-fertilization. 
E) sexually,with both sex organs on same organism,but by self-fertilization. 
A) by budding. 
B) only asexually by intentionally breaking off appendages. 
C) sexually,usually with separate sexes. 
D) sexually,with both sex organs on same organism,similar to earthworms,with cross-fertilization. 
E) sexually,with both sex organs on same organism,but by self-fertilization.

Question 10

Arrow worm anatomy

Accepted Answer

A) lacks any coelom. 
B) lacks a complete digestive tract. 
C) has gills. 
D) has well-developed circulatory and excretory systems. 
E) is unlike any other invertebrate in having a many-layered epidermis. 
A) lacks any coelom. 
B) lacks a complete digestive tract. 
C) has gills. 
D) has well-developed circulatory and excretory systems. 
E) is unlike any other invertebrate in having a many-layered epidermis.

Question 11

A calcareous sieve leading to the water vascular system is the ________________ or sieve plate.

Accepted Answer

The answer of A calcareous sieve leading to the water...

Question 12

Minute,pincer-like ___________________ are found on the surfaces of many sea stars.

Accepted Answer

The answer of Minute,pincer-like ___________________ are found on the surfaces...

Question 13

Treating sea urchin eggs with hypertonic seawater or subjecting them to other stimuli causes them to develop without the presence of sperm,a phenomenon called

Accepted Answer

A) isogamy. 
B) polyspermy. 
C) artificial insemination. 
D) artificial parthenogenesis. 
E) fertilization sensitivity. 
A) isogamy. 
B) polyspermy. 
C) artificial insemination. 
D) artificial parthenogenesis. 
E) fertilization sensitivity.

Question 14

Water for filter feeding in the hemichordates is driven by _________ _________.

Accepted Answer

The answer of Water for filter feeding in the hemichordates...

Question 15

The orientation of a sea star is

Accepted Answer

A) a dorsal mouth and a ventral spiny surface facing upward. 
B) an oral mouth facing downward and an aboral spiny surface. 
C) an anterior mouth and a posterior spiny surface. 
D) a dorsal oral mouth and a ventral-aboral spiny surface. 
E) a ventral mouth and an anti-ventral spiny surface. 
A) a dorsal mouth and a ventral spiny surface facing upward. 
B) an oral mouth facing downward and an aboral spiny surface. 
C) an anterior mouth and a posterior spiny surface. 
D) a dorsal oral mouth and a ventral-aboral spiny surface. 
E) a ventral mouth and an anti-ventral spiny surface.

Question 16

The calcareous plates found underneath the epidermis are called the

Accepted Answer

A) ambulacrae. 
B) tiedemann's bodies. 
C) madreporite. 
D) pedicellariae. 
E) ossicles. 
A) ambulacrae. 
B) tiedemann's bodies. 
C) madreporite. 
D) pedicellariae. 
E) ossicles.

Question 17

The grooves that run along the oral side of the arms of sea stars are called ________________ grooves.

Accepted Answer

The answer of The grooves that run along the oral...

Question 18

Unique characteristics of echinoderms include all of the following EXCEPT

Accepted Answer

A) an endoskeleton of plates or ossicles. 
B) marine,freshwater,and terrestrial species. 
C) pedicellariae. 
D) dermal brachiae. 
E) a water vascular system. 
A) an endoskeleton of plates or ossicles. 
B) marine,freshwater,and terrestrial species. 
C) pedicellariae. 
D) dermal brachiae. 
E) a water vascular system.

Question 19

The complex chewing apparatus found in many sea urchins is the

Accepted Answer

A) ampulla. 
B) aristotle's lantern. 
C) hydrocoel. 
D) pedicellariae. 
E) petaloid. 
A) ampulla. 
B) aristotle's lantern. 
C) hydrocoel. 
D) pedicellariae. 
E) petaloid.

Question 20

The Chaetognaths

Accepted Answer

A) have radial symmetry. 
B) feed on clams. 
C) are small ancestors of fish. 
D) are mostly pelagic plankton feeders. 
E) are solidly advanced deuterostomes. 
A) have radial symmetry. 
B) feed on clams. 
C) are small ancestors of fish. 
D) are mostly pelagic plankton feeders. 
E) are solidly advanced deuterostomes.

Exam 22: Chaetognaths, echinoderms, and Hemichordates

In brittle stars,water circulates into the _______________ for gaseous exchange.

Clade Ambulacraria contains two deuterostome phyla: Echinodermata and ____________.

Outline the phylogeny and adaptive diversification of the hemichordates and discuss the latest data of small subunit rRNA supporting a deuterostome phylogeny for this group.

The echinoids

________________ is the porous plate on the aboral surface where water enters the water vascular system of a sea star.

These odd little echinoderms were formerly considered a class of their own.They possess tube feet distributed around the periphery of their disclike body and belong to the group ___________.

The ________________ live in secreted tubes on the ocean bottom.

The madreporite of sea cucumbers is located in the ________________.

Sea stars reproduce mostly

Arrow worm anatomy

A calcareous sieve leading to the water vascular system is the ________________ or sieve plate.

Minute,pincer-like ___________________ are found on the surfaces of many sea stars.

Treating sea urchin eggs with hypertonic seawater or subjecting them to other stimuli causes them to develop without the presence of sperm,a phenomenon called

Water for filter feeding in the hemichordates is driven by _________ _________.

The orientation of a sea star is

The calcareous plates found underneath the epidermis are called the

The grooves that run along the oral side of the arms of sea stars are called ________________ grooves.

Unique characteristics of echinoderms include all of the following EXCEPT

The complex chewing apparatus found in many sea urchins is the

The Chaetognaths

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, Protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distribution

Animal Ecology

Filters

Water for filter feeding in the hemichordates is driven by _ _.