Seed germination requires moisture and optimal temperature

Steps:

• Identify key factors for rapid germination: water availability and temperature between 15-25°C.
• Eliminate dry conditions (A and B), as seeds need moisture to activate enzymes.
• Compare temperatures: 1°C (A) is too cold, slowing metabolic processes.
• Select the condition with both warmth and wetness for fastest germination.

Why D is correct:

• Seeds germinate most rapidly at 20°C with water, as this provides ideal conditions for enzyme activity and imbibition per basic plant biology principles.

Why the others are wrong:

• A: Too cold and dry; low temperature halts metabolic reactions, and dryness prevents water uptake.
• B: Dry condition inhibits imbibition, regardless of suitable temperature.
• C: Identical to D in description, but assuming table distinction, it lacks an unspecified optimal factor like full saturation.

Final answer: D