In general, which temperature range is necessary for pollen germination?

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Multiple Choice

In general, which temperature range is necessary for pollen germination?

Explanation:
Pollen germination relies on metabolic activation that happens best at warm, not extreme, temperatures. When it's moderately warm, pollen grains hydrate, activate enzymes, and start producing a pollen tube. That makes around mid-20s to low-30s Celsius the most favorable range for germination, which is why 26–32°C is the best choice. If it’s too cold, below about 5°C or even around 10–15°C, metabolic activity is too slow for germination to occur effectively. If it’s too hot, above roughly 40–45°C, enzymes can be stressed or denatured and pollen viability drops.

Pollen germination relies on metabolic activation that happens best at warm, not extreme, temperatures. When it's moderately warm, pollen grains hydrate, activate enzymes, and start producing a pollen tube. That makes around mid-20s to low-30s Celsius the most favorable range for germination, which is why 26–32°C is the best choice. If it’s too cold, below about 5°C or even around 10–15°C, metabolic activity is too slow for germination to occur effectively. If it’s too hot, above roughly 40–45°C, enzymes can be stressed or denatured and pollen viability drops.

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