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1. Define phototrophy and explain its significance in
biological systems.
Answer: Phototrophy is the process by which organisms
harness energy from light to drive metabolic reactions. This
is significant as it enables the synthesis of organic
compounds necessary for growth and survival.
Rationale: This question tests the students' understanding
of the basic concept of phototrophy and its role in
biological systems.
2. Discuss the difference between phototrophs and
chemotrophs in terms of energy acquisition and metabolic
processes.
Answer: Phototrophs obtain energy from light, whereas
chemotrophs obtain energy from the oxidation of organic
or inorganic compounds. Metabolic processes in
phototrophs involve photosynthesis, while chemotrophs
employ various enzymatic reactions for energy acquisition.
Rationale: This question aims to assess students' ability to
differentiate between phototrophs and chemotrophs based
on energy acquisition and metabolic processes.
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