Logic of a solution: *Most mollusks have shells. Mollusks are invertebrates and are no exception. Some invertebrates have shells.*
*(H)*
The original question: *Some invertebrates may have which feature?
Options:
- (A) invertebrate
- (B) fat
- (C) gills
- (D) exception
- (E) three
- (F) mollusk
- (G) complex
- (H) shell*

Line 1: *Annelids have the amazing capacity to regrow segments that break off. Annelids include earthworms and leeches. Leeches have the amazing capacity to regrow segments that break off.*
*(A)*
Line 2: *What can regrow sections that they have lost?
Options:
- (A) leeches
- (B) alveoli
- (C) crocodiles
- (D) vegetation
- (E) a fish
- (F) bacteria
- (G) barnacles
- (H) sharks*

Logic of a solution: *Plants use cellulose for their cell walls. Basically, fiber is cellulose . Cells walls are fiber.*
*(F)*
The original question: *What are cell walls made of?
Options:
- (A) fossils
- (B) peat
- (C) moss
- (D) cations
- (E) Carbon
- (F) Fiber
- (G) Fungi
- (H) sodium*

Line 1: *Centrioles are organelles involved in cell division. Mitosis is cell division. Centrioles are organelles involved in mitosis.*
*(F)*
Line 2: *What is involved in the cellular process of mitosis?
Options:
- (A) Most plants
- (B) layers of fat
- (C) A computer
- (D) Energy.
- (E) Chemical energy
- (F) centrioles
- (G) Energy
- (H) animals*

Logic of a solution: *Most amphibians breathe with gills as larvae and with lungs as adults. Frogs are the most durable of the amphibians. Most frogs breathe with gills as larvae and with lungs as adults.*
*(A)*
The original question: *How do ost frogs breathe as tadpoles?
Options:
- (A) gills
- (B) sucking in air
- (C) oxygen
- (D) lungs
- (E) ligt
- (F) nektar
- (G) skin
- (H) ovaries*

Logic of a solution: *Vertebrate chordates have a backbone. Because reptiles are vertebrates, they are chordates. Reptiles have backbones.*
*(E)*
The original question:
*What do reptiles have?
Options:
- (A) wild rides
- (B) nerves
- (C) toadies
- (D) Bodily water
- (E) backbones
- (F) four limbs
- (G) Leptospirosis
- (H) pipe*