Which factor is generally not required for seed germination?

Which factor is generally not required for seed germination?

• A. Fertilizer
• B. Water
• C. Oxygen
• D. Temperature

Answer: (A)

Germination mainly depends on water to activate enzymes, oxygen for cellular respiration, and a suitable temperature to keep metabolic reactions going. Fertilizer isn’t needed at this stage because the seed already carries stored nutrients to fuel the initial growth until roots develop and can take up nutrients from the soil. In fact, adding fertilizer during germination can sometimes hinder it, as high salt concentrations can create osmotic stress and make it harder for seeds to take up water. Once the seedling is established and begins photosynthesis, nutrients from the environment become important for growth, but the germination step itself does not rely on fertilizer.

Germination mainly depends on water to activate enzymes, oxygen for cellular respiration, and a suitable temperature to keep metabolic reactions going. Fertilizer isn’t needed at this stage because the seed already carries stored nutrients to fuel the initial growth until roots develop and can take up nutrients from the soil. In fact, adding fertilizer during germination can sometimes hinder it, as high salt concentrations can create osmotic stress and make it harder for seeds to take up water. Once the seedling is established and begins photosynthesis, nutrients from the environment become important for growth, but the germination step itself does not rely on fertilizer.