Changing the structure of a chromosome can be what to an organsim?
Options:
- (A) massive damage
- (B) mechanical
- (C) beneficial
- (D) harm them
- (E) negative
- (F) dangerous
- (G) homogenous
- (H) Damages them
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Let's think first: Mutations may change the structure of a chromosome or just change a single nucleotide. Most mutations are beneficial to the organism. Changing the structure of a chromosome can be beneficial to the organism.... So the answer is [(C)]

Phytoplankton have a clever way of making food from what?
Options:
- (A) sunlight energy
- (B) water energy
- (C) heat energy
- (D) heat produced
- (E) chemical energy
- (F) mechanical energy
- (G) organic matter
- (H) refraction of light
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Let's think first: Phytoplankton are bacteria and algae that use sunlight to make food. Plants have a very clever way of using the energy from sunlight to make their food. Phytoplankton have a clever way of making food from sunlight energy.... So the answer is [(A)]

What is a producer in terrestrial biomes?
Options:
- (A) food
- (B) Oak
- (C) mammals
- (D) flowers
- (E) earth
- (F) grass
- (G) Trees
- (H) mushrooms
--
Let's think first: Plants are the major producers in terrestrial biomes. Grasses are very distinctive plants. Grass is a producer in terrestrial biomes.... So the answer is [(F)]

What detect and respond to diurnal cycles?
Options:
- (A) tides
- (B) stars
- (C) fens
- (D) Oak
- (E) Conifers
- (F) humans
- (G) water
- (H) plants
--
Let's think first: Plants detect and respond to the daily cycle of light and darkness. Diurnal cycles Diurnal cycles are the daily cycles of light and darkness. Plants detect and respond to diurnal cycles.... So the answer is [(H)]

Marine biomes are found in large bodies of what?
Options:
- (A) fresh water
- (B) the environment
- (C) salt water
- (D) liquid
- (E) river water
- (F) Absorb light
- (G) Sediment
- (H) black water
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Let's think first: Marine biomes are found in the salt water of the ocean. An ocean is a large body of salt water. Marine biomes are found in large bodies of salt water.... So the answer is [(C)]

Nematodes reproduce how?
Options:
- (A) root growth
- (B) heat or cold
- (C) pollen
- (D) electrically
- (E) sexually
- (F) seeds
- (G) survive
- (H) a cuticle
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Let's think first: Roundworms reproduce sexually. Nematodes are millimeter-sized roundworms. Nematodes reproduce sexually.... So the answer is [(E)]