Answer:
D. Terrestrial invertebrates
Step-by-step explanation:
- Invertebrates are animals without a vertebral column.
- Terrestrial organism are those which are adapted to land habitat.
- Mantle cavities, tracheal tubes and book lungs are respiratory organs of invertebrates.
- Mantle cavities are respiratory organs of molluscs.
- Mollusks are soft bodied animals like Snails, Slugs etc.
- Tracheal tubes are are respiratory organ of most insects like cockroaches ,ant etc.
- The tracheal tubes open on the surface of the body through small pores called spiracles.
- Book lungs are respiratory organs of arachnids .
- Spiders and scorpions are very common examples of arachnids.
- The book lungs has been named sio because of their book like appearance.
- They have pages like respiratory plates that contain the hemolymph.