Roots, stems and leaves continue to do what throughout their lives?
Options:
- (A) die
- (B) edible
- (C) expand
- (D) grow
- (E) growth
- (F) spread
- (G) live
- (H) propagate
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Let's think first: Most plants continue to grow throughout their lives. All seed plants have roots, a stem, and leaves. Roots, stems and leaves continue to grow throughout their lives.... So the answer is [(D)]

Living things interacting get energy from what?
Options:
- (A) Light
- (B) flares
- (C) water
- (D) The Sun
- (E) wind
- (F) glucose
- (G) sunlight
- (H) food
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Let's think first: Most ecosystems get energy from sunlight. Life Living things interact in ecosystems. Living things interacting get energy from sunlight.... So the answer is [(G)]

What is found in chromosomes?
Options:
- (A) Chemical energy
- (B) It helps them survive
- (C) deoxyribonucleic acid
- (D) toxic acids
- (E) more abundant
- (F) allow growth
- (G) internucleic acid
- (H) chromosomal filters
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Let's think first: DNA is found in chromosomes. DNA DNA is deoxyribonucleic acid. Deoxyribonucleic acid is found in chromosomes.... So the answer is [(C)]

Which of these trees seasonally sheds its leaves?
Options:
- (A) gone forever
- (B) Exfoliation
- (C) Most plants
- (D) Mulberry
- (E) ligt
- (F) vegetation
- (G) Heavy rains
- (H) homogenous
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Let's think first: Plants that shed their leaves seasonally each year are called deciduous plants. Mulberry trees are deciduous. Mulberry trees seasonally shed their leaves.... So the answer is [(D)]

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)]

Protonemas develop into what?
Options:
- (A) alveoli
- (B) ferns
- (C) lmestone
- (D) disease
- (E) illness
- (F) parasites
- (G) gas
- (H) spores
--
Let's think first: Flowers produce spores that develop into gametophytes. Gametophytes arise from a protonema. Flowers produce spores from a protonema.... So the answer is [(H)]