Question

11th grade pre-assessment
bioluminescent organisms: meet the living nightlights of our world
marcia amidon lusted
2021
assessment questions
which two statements best identify the central ideas of the article?
a. bioluminescent organisms produce light through chemical reactions or other organisms.
b. bioluminescent organisms are more likely to attract predators due to the bright light they emit.
c. bioluminescent organisms are active at the darkest times of night so that their light appears brightest.
d. partially visible
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Explanation:

To solve this, we analyze each option based on what we know about bioluminescent organisms:

• Option A: Bioluminescent organisms produce light via chemical reactions (e.g., luciferin - luciferase reaction) or symbiosis with other light - producing organisms. This aligns with the scientific understanding of bioluminescence.
• Option B: Bioluminescence often helps organisms avoid predators (e.g., by confusing them or mimicking other organisms) rather than attracting them. So this is incorrect.
• Option C: Many bioluminescent organisms are active at night (or in dark environments like deep sea) so their light is most visible, which makes sense for functions like communication or attracting prey. This is consistent with their behavior.
• Option D: The text is cut off, but from the visible options, A and C are the most accurate descriptions of central ideas about bioluminescent organisms.

Answer:

A. Bioluminescent organisms produce light through chemical reactions or other organisms.
C. Bioluminescent organisms are active at the darkest times of night so that their light appears brightest.