PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A substance through which a plant’s roots grow and extract water and nutrients.
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Cotyledons
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Growing medium
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Root apical meristem
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Cambium
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Explanation:
Detailed explanation-1: -A growing medium can be defined as a substance through which roots grow and extract water and nutrients. In native plant nurseries, a growing medium can consist of native soil but is more commonly an “artificial soil” composed of materials such as peat moss or compost.
Detailed explanation-2: -Water from the soil is absorbed by the roots through a process known as osmosis. The cell membrane of the root hair cells acts as a semi-permeable membrane. The cell sap inside the vacuole is a strong solution with low water concentration.
Detailed explanation-3: -Directed growth of roots in relation to a gradient in moisture is called hydrotropism and begins in the root cap with the sensing of the moisture gradient.
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