WorksheetsMolluscs, Arthropods and Equinoderms
Total questions: 15
Worksheet time: 8mins
What are the threee groups of molluscs?
Gastropods, equinoderms and bivalves
Gastropods, bivalves and myriapods
Crustaceans, bivalves and cephalopods
Gastropods, bivalvesa and cephalopods
Which charateristic is common to all molluscs?
They are aquatic
They have the body divided in head, visceral mass and foot
They have a shell to protect the visceral mass
They have the foot attached to the head
Which of this animals are filter feeders?
Gastropods such as snails
Cephalopods such as squids
Bivalves such as clams
All molluscs are filter feeders
What happen with the shell of the cephalopods?
All cephalopods have external shell
All cephalopods have internal shell
Some of them have internal shell and others have external one
Some of them have shell and others have no shell
Arthopods have an exoskeleton made of...
chitin
creatinin
chiscritin
chispirritin
What is moulting?
A type of jointed appendages typical of crustaceans
A type of myriapods
Getting rid of the exoskeleton
A type fo jointed appendages typical of arachnids
How many pairs of legs do crustaceans have?
5
4
3
2
An arthropod that has 3 pairs of legs is
A crustacean
An insect
An arachnid
A myriapod
An arthropod that have the body divided into head and trunk is
A myriapod
An arachnid
An insect
A crustacean
Where do usually arachnids live?
They are aquatic
They live in damp terrestrial areas
They live in dry terrestrial ecosystems
They spend most of the time in the air
Which of the following sentences is not a characterisctic of insects?
They have the body divided into head, torax and abdomen
They have three pairs of legs
All the insects have two pairs of wings
They are the most aboundant group of animals
Which of the following animals have radial symmetry?
Starfish
Squids
Slugs
Butterflies
What are the functions of the vascular system of the echinoderms?
To reproduce and to move
To feed and to reproduce
To feed and to move
To feed, reproduce and move
Which of the following animals is a parasite?
Octopuses
Ticks
Lobsters
Starfish
Which of the following animals can be a food source?
Bivalves like mussels
Crustaceans licke lobsters
Cephalopods like squids
All of them
