Question 1

The water vascular system is

Accepted Answer

A)  coelomic in origin. 
B)  unique to echinoderms. 
C)  lined with cilia. 
D)  required for locomotion. 
E)  All of the answers are correct. 
A)  coelomic in origin. 
B)  unique to echinoderms. 
C)  lined with cilia. 
D)  required for locomotion. 
E)  All of the answers are correct.

Question 2

A marine biologist is asked to identify an echinoderm and is given a living sample of larvae to use to achieve this goal. Can the scientist identify the class of echinoderm from this sample, and if so what would be the simplest process the scientist could use?

Accepted Answer

A)  No, the echinoderm cannot be identified. 
B)  Yes, by observing the positions of pharyngeal slits. 
C)  Yes, the echinoderm can be identified from the larvae by identifying unique molecular markers for each different class and then analysing the DNA of the sample against them. 
D)  Yes, the echinoderm can be identified from the larvae by performing a micro-dissection performed by an experienced scientist that is intimately familiar with echinoderms. 
E)  Yes, the echinoderm can be identified from the larvae by simply allowing it to develop projecting arms and observing their arrangement which will be diagnostic of the class. 
A)  No, the echinoderm cannot be identified. 
B)  Yes, by observing the positions of pharyngeal slits. 
C)  Yes, the echinoderm can be identified from the larvae by identifying unique molecular markers for each different class and then analysing the DNA of the sample against them. 
D)  Yes, the echinoderm can be identified from the larvae by performing a micro-dissection performed by an experienced scientist that is intimately familiar with echinoderms. 
E)  Yes, the echinoderm can be identified from the larvae by simply allowing it to develop projecting arms and observing their arrangement which will be diagnostic of the class.

Question 3

From earliest to latest, what is the accepted order of fossil specimens of human ancestors?

Accepted Answer

A)  H. heidelbergensis, H. habilis, H. erectus, H. ergaster 
B)  H. ergaster, H. habilis, H. heidelbergensis, H. erectus 
C)  H. habilis, H. heidelbergensis, H. ergaster, H. erectus 
D)  H. habilis, H. ergaster, H. erectus, H. heidelbergensis 
E)  All of the answers are incorrect 
A)  H. heidelbergensis, H. habilis, H. erectus, H. ergaster 
B)  H. ergaster, H. habilis, H. heidelbergensis, H. erectus 
C)  H. habilis, H. heidelbergensis, H. ergaster, H. erectus 
D)  H. habilis, H. ergaster, H. erectus, H. heidelbergensis 
E)  All of the answers are incorrect

Question 4

Eutherians include a diversity of forms which are believed to have originated from a common ancestor which was

Accepted Answer

A)  a monotreme. 
B)  a small insectivorous mammal. 
C)  paleognathae. 
D)  Homo erectus. 
E)  an amphibian. 
A)  a monotreme. 
B)  a small insectivorous mammal. 
C)  paleognathae. 
D)  Homo erectus. 
E)  an amphibian.

Question 5

Excretion of nitrogenous wastes in Echinoderms is via

Accepted Answer

A)  tube feet. 
B)  nephridia. 
C)  the madreporite. 
D)  tube feet and nephridia. 
E)  tube feet and the madreporite. 
A)  tube feet. 
B)  nephridia. 
C)  the madreporite. 
D)  tube feet and nephridia. 
E)  tube feet and the madreporite.

Exam 41: Echinoderms and Chordates

The water vascular system is

A marine biologist is asked to identify an echinoderm and is given a living sample of larvae to use to achieve this goal. Can the scientist identify the class of echinoderm from this sample, and if so what would be the simplest process the scientist could use?

From earliest to latest, what is the accepted order of fossil specimens of human ancestors?

Eutherians include a diversity of forms which are believed to have originated from a common ancestor which was

Excretion of nitrogenous wastes in Echinoderms is via

Nature of Molecules

Biomolecules

The Chemistry of Life

Functioning Cells

Movement Across Membranes

Harvesting Energy

Cells, Tissues and Signals

Cell Division

Inheritance

Genes, Chromosomes and Dna

The Genetic Code

Gene Expression

Genomes, Mutation and Cancer

Viruses

Genetic Engineering and Biotechnology

Reproduction, Growth and Development of Flowering Plants

Structure of Plants

Plant Nutrition, Transport and Adaptation to Stress

Plant Hormones and Growth Responses

Animal Reproduction

Animal Development

Homeostasis: Water, Solutes and Excretion

Gas Exchange in Animals

Circulation

Metabolism, Temperature Regulation and Environmental Stress

Animal and Human Nutrition

Innate Defences and the Immune System

Hormonal Control in Animals

Nervous Systems

Animal Movement

Animal Behaviour

Evolving Life

Evolving Earth

Mechanisms of Evolution

Bacteria

The Protists

Plants

Fungi

Simple Animals: Sponges to Flatworms

Annelids, Molluscs, Nematodes and Arthropods

Australian Biota

Population Ecology

Living in Communities

Ecosystems

Human Impacts

Filters