What is usually chosen in evolution?
Options:
- (A) common traits
- (B) Plant reproduction
- (C) advantageous systems
- (D) undesirable traits
- (E) Animal survival
- (F) competition
- (G) mysterious sytems
- (H) Earth revolving around the sun
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Let's think first: Evolution occurs by a process called natural selection. Natural selection only selects functionally advantageous systems. In evolution only functionally advantageous systems are selected.... So the answer is [(C)]

Members of the myrmecocystus genus communicate via pheromones, which are a type of:
Options:
- (A) sense of smell
- (B) chemical receptor
- (C) organ
- (D) insects
- (E) chemical
- (F) sound
- (G) antennae
- (H) Vibrates
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Let's think first: Ants communicate with chemicals called pheromones. Honeypot ants are classified in the genus Myrmecocystus. Members of the Myrmecocystus genus communicate via chemicals called pheromones.... So the answer is [(E)]

Individuals who move into or out of a community increase:
Options:
- (A) homogeneity
- (B) energy usage
- (C) power
- (D) monoculture
- (E) competition
- (F) adding heat
- (G) population
- (H) gene flow
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Let's think first: Gene flow occurs when individuals move into or out of a population. Community health focuses on the health of populations or groups. Gene flow occurs when individuals move into or out of a community.... So the answer is [(H)]

What can have motility?
Options:
- (A) Small things with a microscope
- (B) gastropod shells
- (C) members of their own species
- (D) one celled organisms
- (E) Something to move
- (F) mitochondria
- (G) rocks
- (H) intestines
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Let's think first: Most protists have motility. Protists are one celled organisms. One celled organisms can have motility.... So the answer is [(D)]

What attracts pollinators to the flower?
Options:
- (A) something great for potpourri
- (B) Something with a head, thorax, and abdomen
- (C) peachleaf willow
- (D) By wind and rain
- (E) photosynthesis.
- (F) Something made from fermented ricce
- (G) Earth revolving around the sun
- (H) at or near the margins
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Let's think first: Petals attract pollinators to the flower. Petals are great for potpourri or for making rose petal jelly. Something great for potpourri attracts pollinators to the flower.... So the answer is [(A)]

Bromeliads and cacti have adapted to very _ environments.
Options:
- (A) dry
- (B) wet
- (C) arid
- (D) cold
- (E) UV
- (F) warm
- (G) humid
- (H) fern
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Let's think first: Plants that are adapted to very dry environments are called xerophytes. Bromeliads and cacti are xerophytes. Bromeliads and cacti have adapted to very dry environments.... So the answer is [(A)]