For germination to be a success you need water and warmth only. You do not need carbon dioxide. It is a common misconception. As seeds do not have leaves for photosynthesis, they do not need carbon dioxide.
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A seed needs water, oxygen, and the right temperature to germinate. Water helps activate the enzymes necessary for growth, oxygen supports respiration, and appropriate temperature triggers metabolic processes.
# maturity of age and/or removal of internal inhibiting factors # moisture # oxygen
Three things a seedling needs in order to germinate is water in the correct amount second the seedling needs warm temperature third it needs food.
When a seed begins to grow/sprout it is known as germination.
Seeds need moisture to germinate, and seed packets are dry.
Some species do and some species don't. All species need their seeds to be in their own type of environment to germinate.
During seed germination embryo in a seed grows. As a result a small seedling comes out of the seed.
Seeds require water, oxygen, and the right temperature to germinate. Additionally, some seeds may need light or darkness to trigger germination, depending on the plant species. The presence of suitable soil conditions and the absence of inhibitors also play a role in seed germination.