#1
Which phylum do jellyfish belong to?
Cnidaria
ExplanationJellyfish belong to the phylum Cnidaria.
#2
What is the primary characteristic of marine invertebrates?
They lack a backbone
ExplanationMarine invertebrates lack a backbone.
#3
Which of the following is not a characteristic of Cnidarians?
Presence of a hard shell
ExplanationCnidarians do not have a hard shell.
#4
Which marine invertebrate phylum includes animals with jointed legs and a hard exoskeleton?
Arthropoda
ExplanationArthropoda includes animals with jointed legs and a hard exoskeleton.
#5
What is the function of a cephalopod's siphon?
Locomotion
ExplanationA cephalopod's siphon is used for locomotion.
#6
Which marine invertebrate group undergoes metamorphosis during its life cycle?
Mollusks
ExplanationMollusks undergo metamorphosis during their life cycle.
#7
Which marine invertebrate possesses a radula for feeding?
Mollusks
ExplanationMollusks possess a radula for feeding.
#8
Which marine invertebrate class includes animals with a water vascular system?
Echinodermata
ExplanationEchinodermata includes animals with a water vascular system.
#9
Which of the following is not a characteristic of echinoderms?
Segmented body
ExplanationEchinoderms do not have a segmented body.
#10
What is the primary function of the tube feet in echinoderms?
Feeding and locomotion
ExplanationTube feet in echinoderms are primarily used for feeding and locomotion.