Which of the following are the external factors for the development of plants?

Light

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Temperature

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Water

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All of the above

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Solution

The correct option is D All of the above
Light, temperature and water are the environmental factors that play important roles in the development of plants. These environmental factors are also known as external factors.

Light is one of the most important factors for the growth of plants. It helps in photosynthesis.
Temperature affects the rate of photosynthesis, transpiration and germination of seeds.
Water is essential for transporting minerals and nutrients all over the plant.

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