Question 1

Leeches

Accepted Answer

A)  lack a clitellum. 
B)  feed only on blood. 
C)  have a trochophore larva. 
D)  have internal fertilisation. 
E)  have chitinous bristles, the chaetae. 
A)  lack a clitellum. 
B)  feed only on blood. 
C)  have a trochophore larva. 
D)  have internal fertilisation. 
E)  have chitinous bristles, the chaetae.

Question 2

Which of the following statements are CORRECT?

Accepted Answer

A)  Annelids, arthropods and molluscs have an internal body cavity, the coelom which develops between the inner and outer layers of the mesoderm. 
B)  Nematodes have a body cavity that develops from the blastocoel and so is not a true coelom. 
C)  DNA evidence of phylogeny indicates that molluscs and annelids are related on one evolutionary branch, the Lophotrochozoa. 
D)  Molluscs and nematodes are non-segmented animals. 
E)  All of these statements are correct. 
A)  Annelids, arthropods and molluscs have an internal body cavity, the coelom which develops between the inner and outer layers of the mesoderm. 
B)  Nematodes have a body cavity that develops from the blastocoel and so is not a true coelom. 
C)  DNA evidence of phylogeny indicates that molluscs and annelids are related on one evolutionary branch, the Lophotrochozoa. 
D)  Molluscs and nematodes are non-segmented animals. 
E)  All of these statements are correct.

Question 3

The radula is

Accepted Answer

A)  the toothed tongue of cephalopods and molluscs. 
B)  the proteinaceous cuticle of nematodes. 
C)  the beak-like mouthparts of arthropods. 
D)  the gas-filled chambers used for buoyancy in bivalves. 
E)  the greatly developed head of gastropods. 
A)  the toothed tongue of cephalopods and molluscs. 
B)  the proteinaceous cuticle of nematodes. 
C)  the beak-like mouthparts of arthropods. 
D)  the gas-filled chambers used for buoyancy in bivalves. 
E)  the greatly developed head of gastropods.

Question 4

Most bivalves

Accepted Answer

A)  use cilia on their gills to filter feed. 
B)  are sessile or slow-moving. 
C)  have no distinct head. 
D)  have two shell plates which enclose the body. 
E)  All of the answers are correct. 
A)  use cilia on their gills to filter feed. 
B)  are sessile or slow-moving. 
C)  have no distinct head. 
D)  have two shell plates which enclose the body. 
E)  All of the answers are correct.

Question 5

Nematodes

Accepted Answer

A)  are small non-segmented round worms most closely related on the phylogenetic tree to earthworms (oligochaetes). 
B)  are covered with a thick chitinous cuticle secreted by the epidermal cells. 
C)  have a fixed number of cells in the organism and mitotic division does not occur after hatching. 
D)  have circular muscles around a tubular body that are usually tapered at the ends. 
E)  contain a coelom, similar to other members of their phylogenetic group, the protostomes. 
A)  are small non-segmented round worms most closely related on the phylogenetic tree to earthworms (oligochaetes). 
B)  are covered with a thick chitinous cuticle secreted by the epidermal cells. 
C)  have a fixed number of cells in the organism and mitotic division does not occur after hatching. 
D)  have circular muscles around a tubular body that are usually tapered at the ends. 
E)  contain a coelom, similar to other members of their phylogenetic group, the protostomes.

Exam 40: Annelids, Molluscs, Nematodes and Arthropods

Leeches

Which of the following statements are CORRECT?

The radula is

Most bivalves

Nematodes

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

Echinoderms and Chordates

Australian Biota

Population Ecology

Living in Communities

Ecosystems

Human Impacts

Filters