Line 1: *Echinoderms lack a centralized nervous system. Echinoderms are represented by the starfish. Starfish lack a centralized nervous system.*
*(A)*
Line 2: *What lacks a centralized nervous system?
Options:
- (A) starfish
- (B) barnacles
- (C) blowfish
- (D) our planet
- (E) humans
- (F) Pesticides
- (G) insects
- (H) sharks*
Logic of a solution: *Most reptiles have good eyesight and a keen sense of smell. Olfaction is the sense of smell and gustation is the sense of taste. Most reptiles have good olfaction.*
*(B)*
The original question: *What is one attribute of most reptiles?
Options:
- (A) aerobic capacity
- (B) good olfaction
- (C) a cuticle
- (D) warm-blooded
- (E) graptolites
- (F) an organism's body
- (G) permineralization
- (H) stamina*
Line 1: *Muscles can only contract. Bones work with muscles to perform movement. Contraction enables bones to perform movement.*
*(A)*
Line 2: *What enables bones to perform movement?
Options:
- (A) contraction
- (B) Energy
- (C) sensory neurons
- (D) looseness
- (E) Chemical energy
- (F) Vibrates
- (G) fur and fat
- (H) layers of fat*
Logic of a solution: *Most modern gymnosperms are trees with woody trunks. Gymnosperms are the plants that are known as evergreens. Evergreens are mostly trees with woody trunks.*
*(C)*
The original question: *What type of trunk does evergreen usually have?
Options:
- (A) oak
- (B) greenwood
- (C) woody
- (D) bark
- (E) hollowed
- (F) Spruce
- (G) spiny
- (H) bent*
Line 1: *Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Male gametes are called sperm. Fertilization occurs when a male gamete and an egg fuse together to form a diploid zygote.*
*(D)*
Line 2: *What is formed when a male gamete and an egg fuse together?
Options:
- (A) Plant reproduction
- (B) simple zygote
- (C) spread flower seeds
- (D) diploid zygote
- (E) Chemical energy
- (F) peachleaf willow
- (G) duplex zygote
- (H) reproductive zygote*
Line 1: *Amphibians are the first true tetrapods, or vertebrates with four limbs. Bullfrogs eat other amphibians. Bullfrogs are of the class of creatures that were the first true tetrapods.*
*(D)*
Line 2:
*These belong to the class of creature that were the first true tetrapods:
Options:
- (A) millipede
- (B) crabs
- (C) four limbs
- (D) bullfrogs
- (E) gastropod
- (F) a fish
- (G) warm-blooded
- (H) insects*