WorksheetsInvertebrates
Total questions: 30
Worksheet time: 15mins
Which of the following is correctly paired?
Mollusk: Corals
Annelids: Earthworm
Cnidarian: Sea Star
Arthropod: Sea Sponge
Where do sea stars and sea urchins belong?
Echinoderms
Cnidaria
Arthropods
Mollusk
Corals and sea jellies belong to phylum __________.
Cnidaria
Anthropoda
Mollusca
Echinodermata
Flatworms such as Tapeworms are parasitic and they belong to the phylum ___________.
Annelida
Nematoda
Mollusca
Platyhelminthes
Which is true about Sea sponges?
They are mobile
They are sessile
They have a hole which serve as a mouth and anus
They have tentacles filled with venom
How many legs do most spiders have?
8
6
12
10
What is the hard outer covering of arachnids called?
Shield
Armor
Exoskeleton
Shell
Which do NOT belong to the group?
snail
octopus
oyster
shrimp
Which organism cannot regenerate and reproduce by fragmentation?
Earthworm
Planaria
Leech
Cockroach
Which is NOT a characteristic of Echinoderms?
Spiny skin
Tubed feet
Marine animals
Hard shell and soft mantle
What is the stinging structure found in cnidarians called?
stingray
nematocyst
tentacle
barb
Why do annelids have the ability to regenerate lost body parts?
Because of the presence of Nematocysts
Because they can release ink and fight off their predator
Because they have an abundance of stem cells.
Because they are hermaphroditic organisms and contain both gametes
What is the main function of the pores in sponges?
Provide structural support
Regulate temperature
Store nutrients
Facilitate water flow, filter feeding, and gas exchange
Which of the following is a common characteristic of insects?
Six legs
Eight legs
Soft body with hard shell
Marine habitat
What is the main function of the exoskeleton in insects?
Protection
Respiration
Reproduction
Food storage
Which phylum do organisms like crabs and lobsters belong to?
Echinodermata
Cnidaria
Arthropoda
Mollusca
I am spiny, have a water vascular system with tube feet, and radial symmetry, and am called a brittle star. I belong to which Phylum?
I have a digestive cavity with one opening, and tentacles. I am a hydra. Which Phylum do I belong to?
Which of these is a characteristic of the animal kingdom?
I. Heterotrophic
II. Autotroph
III. Eukaryotic
IV. Sexual reproduction
II and IV
I and IV
I, II, and III
I, III, and IV
Based on the number of species, which is the largest group of animals?
Insects
Mammals
Vertebrates
Invertebrates
Which is TRUE about Sea Sponges?
They have sting cells which contain nematocysts
They have a large opening which expel water
They belong to the Phylum Cnidaria
They have a hard shell and soft body
Which is NOT a Cnidarian?
Hydra
Portuguese man-of-war
Planarian
Sea annemone
Anterior is to front while ______ is to back.
Posterior
Lateral
Medial
Distal
______ refers to the upper part, _______ is the lower part.
Anterior, Posterior
Posterior, Anterior
Superior, Inferior
Inferior, Superior
Which is NOT an Arachnid?
Scorpion
Tarantula
Daddy long legs
Cockroach
Which body section do insects have six legs attached to?
tail
thorax
abdomen
head
What is a common characteristic of Arachnids?
Feeds on plants
Venomous
Parasitic lifestyle
Six legs
