TREE PROPAGATION AND PLANTING
SEED PROPAGATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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soil, water, air
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suitable temperature, water, sunlight
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air, water, suitable temperature
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None of the above
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Detailed explanation-1: -Light, water, oxygen, and temperature are essential conditions for seed germination.
Detailed explanation-2: -All seeds need water, oxygen and the right temperature to germinate. Dormancy is a state of suspended animation in which seeds delay germination until conditions are right for survival and growth. Some Australian plants need fire or smoke to germinate, while others rely on insects and animals.
Detailed explanation-3: -Water allows the seed to swell up and all the chemical reactions involved in the growth of the embryo to take place. Oxygen is needed for aerobic respiration which provides the energy the embryo needs to carry out cell division and grow. Warmth is required for the enzymes to carry out respiration and cell division.