Molluscs
Segmented Worms
Cephalopods
Gastropods
Bivalves
100
The membrane that surrounds the internal organs of all molluscs.
What is the mantle?
100
Segmented worms belong to the Phylum ______
What is Annelida?
100
True or false: Cephalopods can live in both aquatic and terrestrial ecosystems.
What is FALSE.
100
True or false: All gastropods have an exoskeleton called an external shell.
What is FALSE?
100
Bivalves are filter-feeders that use their _______ to extract organic particles from the water for food.
What is gills?
200
All/most/some/ molluscs have an exoskeleton called a shell.
What is MOST?
200
Which two types of segmented worms are hermaphrodites?
What is earthworms and leeches
200
What is the main physical difference between a squid and an octopus?
What is squid have two tentacles and eight arms; octopuses only have eight arms.
200
The tongue-like organ with rows of teeth all gastropods use to obtain, scrape and tear their food.
What is radula?
200
True or false: Bivalves cannot swim; they can only move by digging or anchoring with their foot.
What is FALSE? Scallops are a type of bivalve that can swim by quickly opening and closing their shell.
300
Most molluscs' circulatory systems allow their blood to be exposed directly to their organs. This is called...
What is open circulatory system?
300
The muscular sack through which soil and food pass through within the digestive system of segmented worms.
What is gizzard?
300
_________ can be over 10 meters long.
What is giant squid?
300
Gastropods are _______, meaning they reproduce sexually and have the reproductive organs of both male and female sexes.
What is hermaphrodite?
300
Where do bivalves live?
What is in aquatic ecosystems (on the sea or river floor)?
400
Most molluscs have bilateral symmetry when they are young. This means...
What is symmetrical (identical) left and right sides of the body.
400
Segmented worms have closed circulatory systems and must live in wet areas because...
What is they exchange gases through their skin.
400
Cephalopods are very good at disguising themselves from prey and predators. What are two ways in which they do this?
What is they squirt ink and change colour?
400
All gastropods have the same type of movement, which involves a _____________.
What is large foot?
400
All bivalves have a muscular foot which, depending on the species, they use for _________ or __________.
What is burrowing or attaching themselves to rocks?
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