Selected MCQ

Current Question
Which process removes CO₂ from atmosphere long-term?
  • A. Photosynthesis
  • B. Respiration
  • C. Ocean dissolution
  • D. Silicate weathering
Correct Answer: D
Explanation:
Weathering locks carbon in rocks.
Related Question 1
Which biomolecule stores energy long term?
  • A. Protein
  • B. Lipid
  • C. Carbohydrate
  • D. Nucleic acid
Correct Answer: B
Explanation:
Lipids store long-term energy.
Related Question 2
Which process removes CO₂ in plants?
  • A. Respiration
  • B. Photosynthesis
  • C. Transpiration
  • D. Diffusion only
Correct Answer: B
Explanation:
Plants fix CO₂ into glucose.
Related Question 3
Which process most directly forms soil horizons over long timescales?
  • A. Instantaneous melting
  • B. Weathering combined with organic accumulation and leaching
  • C. Oceanic spreading
  • D. Lunar tidal forcing
Correct Answer: B
Explanation:
Soil profiles develop from parent material alteration plus biological and hydrologic processes.
Related Question 4
Which process produces zygote?
  • A. Pollination
  • B. Fertilization
  • C. Germination
  • D. Transpiration
Correct Answer: B
Explanation:
Fusion of gametes forms zygote.
Related Question 5
Which process forms soil?
  • A. Weathering
  • B. Fusion
  • C. Respiration
  • D. Photosynthesis
Correct Answer: A
Explanation:
Weathering breaks rocks.