What phylum do starfish belong to?
Options:
- (A) fertile
- (B) animals
- (C) Echinoderm.
- (D) Mollusca.
- (E) Sponge.
- (F) Absorb light
- (G) Annelid.
- (H) a fish
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Let's think first: Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are echinoderms.... So the answer is [(C)]

Plants are not what?
Options:
- (A) alive
- (B) infected
- (C) green
- (D) animals
- (E) growing
- (F) viruses
- (G) Conifers
- (H) parasites
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Let's think first: Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. All plants are eukaryotes. Viruses are not plants.... So the answer is [(F)]

Where does intense activity occur in a plant?
Options:
- (A) Roots
- (B) Buds
- (C) bamboo
- (D) fields
- (E) Summer
- (F) years
- (G) Hairs
- (H) Petals
--
Let's think first: Roots have primary and secondary meristems for growth in length and width. Meristems are zones of intense activity. Roots are zones of intense activity.... So the answer is [(A)]

What attract pollinators like animals that eat apples and disperse the undigested seeds?
Options:
- (A) beans
- (B) honeybees
- (C) stalks
- (D) roots
- (E) bushes
- (F) orchids
- (G) ferns
- (H) flowers
--
Let's think first: Flowers attract pollinators, and fruits encourage animals to disperse the seeds. Sweet fruit like apples are eaten by animals that disperse the undigested seeds. Flowers attract pollinators like animals that eat apples and disperse the undigested seeds.... So the answer is [(H)]

What is essential for evolution to occur?
Options:
- (A) Changes in DNA sequences
- (B) Plant reproduction
- (C) Natural disasters
- (D) Gamma radiation
- (E) biological diversity
- (F) DNA sequences staying the same
- (G) the environment
- (H) that material's properties
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Let's think first: Mutations are essential for evolution to occur. Mutations are changes in the DNA sequence. Changes in DNA sequences are essential for evolution to occur.... So the answer is [(A)]

How do animals dissipate body heat?
Options:
- (A) sweat
- (B) eat food
- (C) lay in the sun
- (D) insulation
- (E) coat
- (F) osmosis
- (G) fur
- (H) cooling
--
Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. Animals are inefficient energy converters. Animals produce body heat which is dissipated by sweat.... So the answer is [(A)]