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State the requirements for seed germination and give the importance of each requirement. How will you demonstrate tropism in the shoot?
Biology
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6 stepsPart c
Requirements for seed germination
- Water: Activates enzymes, softens the seed coat, and transports dissolved nutrients to the embryo.
- Oxygen: Essential for aerobic respiration, which provides energy for the embryo's growth.
- Suitable temperature: Provides the optimal conditions for enzyme activity, which are crucial for metabolic processes during germination.
Part d· 6 steps
To demonstrate tropism in the shoot (phototropism)
Obtain a healthy potted seedling and a cardboard box with a small opening cut into one side.
Place the potted seedling inside the box, ensuring the opening is the only source of light.
Position a light source (e.g., a lamp) outside the box, shining directly through the opening towards the seedling.
Leave the setup undisturbed for several days, providing regular watering.
Observe the direction of growth of the plant's shoot.
The shoot will be seen to bend and grow towards the light source, demonstrating phototropism, which is the growth response of a plant towards light.
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