PLANT PHYSIOLOGY
PLANT GROWTH
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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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oxygen, water, suitable temperature
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None of the above
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Detailed explanation-1: -Following are the external conditions required for the seed germination are: Oxygen, moisture and suitable temperature. Oxygen: Oxygen is necessary for the germination because respiration increases sharply during seed germination.
Detailed explanation-2: -All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate.
Detailed explanation-3: -Seeds require a certain temperature in order to germinate. Each plant has a specific optimum and a range within which germination will occur. The closer the temperature is to optimum, the quicker germination will occur. Most seeds germinate when the soil temperature is between 68° and 86°F.
Detailed explanation-4: -There are four environmental factors that affect seed germination: Water, Light, Oxygen, and Heat.