Invertebrates Zoology 3000

What are the three main classes of mollusks?

• Crustacea, Arachnida, and Insecta.

• Annelida, Platyhelminthes, and Nematoda.

• Chondrichthyes, Osteichthyes, and Agnatha.

• Gastropoda, Bivalvia, and Cephalopoda

Which class of mollusks includes snails, slugs, and nudibranchs?

• Cephalopoda

• Polyplacophora

• Bivalvia

• Gastropoda

What is the respiratory organ in aquatic invertebrates called?

• gills

• skin

• tracheae

• lungs

How do aquatic invertebrates obtain oxygen from water?

• Absorption through their skin.

• Ingestion through their mouthparts.

• Conversion of carbon dioxide into oxygen.

• Diffusion through gills or tracheae

What are the sensory organs in invertebrates called?

• antennae

• tentacles

• gills

• sensilla

Which sensory organ in invertebrates is responsible for detecting light?

• gills

• antennae

• eyes

• tentacles

Which sensory organ in invertebrates is responsible for detecting sound?

• statocyst

• tentacles

• antennae

• gills

Which sensory organ in invertebrates is responsible for detecting touch?

• visual organ

• auditory organ

• olfactory organ

• tactile organ

Which sensory organ in invertebrates is responsible for detecting chemicals?

• auditory receptors

• taste buds

• olfactory receptors

• chemoreceptors

Which sensory organ in invertebrates is responsible for detecting vibrations?

• compound eyes

• antennae

• statocyst

• gills