Logic of a solution: *Most invertebrates have a more complex nervous system. Cephalopods have well developed nervous systems with complex brains capable of learning. Most invertebrates have brains capable of learning.*
*(F)*
The original question: *Most invertebrates have brains capable of what?
Options:
- (A) telepathy
- (B) movement
- (C) telekinesis
- (D) allow growth
- (E) animals
- (F) learning
- (G) relocation
- (H) power*

Line 1: *Phytoplankton are bacteria and algae that use sunlight to make food. Most copepods feed on phytoplankton. Most copepods feed on bacteria and algae that use sunlight to make food.*
*(G)*
Line 2: *Most _ feed on bacteria and algae that use sunlight to make food.
Options:
- (A) Energy
- (B) Lobsters
- (C) Most plants
- (D) Seaweed
- (E) Starfish
- (F) plant life
- (G) Copepods
- (H) energy usage*

Logic of a solution: *Roundworms may be free-living or parasitic. Parasites Shortfin makos host a variety of parasitic copepods. Roundworms may be living on a host or free-living.*
*(C)*
The original question: *Roundworms can be free-living or live on a what?
Options:
- (A) soil
- (B) nest
- (C) host
- (D) root
- (E) stem
- (F) habitat
- (G) food
- (H) commune*

Line 1: *Plants release oxygen during the day but not during the night. All plants are trees. Trees release oxygen during the day but not at night.*
*(H)*
Line 2: *What do trees release during the day but not at night?
Options:
- (A) Energy
- (B) water
- (C) He
- (D) Ce
- (E) chemicals
- (F) Energy.
- (G) heat
- (H) oxygen*

Logic of a solution: *Sex hormones are chemical messengers that control sexual development and reproduction. Chemical messengers carry signals from one nerve branch to another. Sex hormones carry signals that control sexual development and reproduction.*
*(B)*
The original question: *_ carry signals that control sexual development and reproduction.
Options:
- (A) photons
- (B) sex hormones
- (C) nerves
- (D) Most plants
- (E) organs
- (F) orchids
- (G) animals
- (H) insects*

Logic of a solution: *Populations of viruses do not grow through cell division because they are not cells. Where most viruses are DNA, HIV is an RNA virus. Populations of HIV do not grow through cell division because they are not cells.*
*(F)*
The original question:
*What does not grow through cell division?
Options:
- (A) p53
- (B) AIDS
- (C) host
- (D) DDT
- (E) lung
- (F) HIV
- (G) corn
- (H) HPV*