Line 1: *Roots grow in length and width from primary and secondary meristem. Vascular cambium is a primary meristem. Roots grow in length and width from the vascular cambium.*
*(B)*
Line 2: *The vascular cambria allows:
Options:
- (A) Exfoliation
- (B) roots to grow
- (C) plant
- (D) movement
- (E) Animal survival
- (F) soil
- (G) liver
- (H) rapid expansion*

Logic of a solution: *Arteries generally carry oxygen-rich blood. Oxygen-rich blood is critical for erectile health. Arteries are critical for erectile health.*
*(F)*
The original question: *What are critical for erectile health?
Options:
- (A) fur and fat
- (B) Energy.
- (C) Energy
- (D) sweating
- (E) exercise
- (F) arteries
- (G) strength
- (H) a cuticle*

Line 1: *Cells secrete acids and bases to maintain the proper pH for enzymes to work. Acids and bases are electrolytes. Cells secrete electrolytes to maintain the proper pH for enzymes to work.*
*(H)*
Line 2: *What do cells secrete to maintain the proper ph for enzymes to work?
Options:
- (A) Energy
- (B) Chemical energy
- (C) water conservation
- (D) sweating
- (E) heat energy
- (F) aqueous solution
- (G) Organic compounds
- (H) electrolytes*

Logic of a solution: *Most invertebrates have a nervous system. Insects are the most common invertebrates. Insects have a nervous system.*
*(H)*
The original question: *What has a nervous system?
Options:
- (A) animals
- (B) tortoises
- (C) crocodiles
- (D) sponges
- (E) elephants
- (F) placozoans
- (G) mesozoans
- (H) insects*

Line 1: *Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Glucose, a type of sugar, is the body's fuel. Ethanol is produced by alcoholic fermentation of the sugar in corn or other plants.*
*(B)*
Line 2: *What is ethanol produced from?
Options:
- (A) coal
- (B) sugar
- (C) SO2
- (D) animal fat
- (E) paper
- (F) salts
- (G) Trees
- (H) Oak*

Line 1: *Chloroplasts contain the green pigment chlorophyll. Photosynthetic Pigments Photosynthetic Pigments Pigments are colorful compounds. Chloroplasts contain the green compound chlorophyll.*
*(H)*
Line 2:
*What contains the green compound chlorophyll?
Options:
- (A) mitochondria
- (B) Most plants
- (C) vacuoles
- (D) color of leaves
- (E) cell walls
- (F) peachleaf willow
- (G) In their leaves
- (H) chloroplasts*