PLANTS
PLANT RESPONSES TO STIMULI
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Respiration, dissolved minerals
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Photosynthesis, dissolved minerals
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Oxidation, dissolved minerals
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Excretion, dissolved minerals
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Detailed explanation-1: -A positive hydrotropism is one in which the organism tends to grow towards moisture whereas a negative hydrotropism is when the organism grows away from it. An example of positive hydrotropism is the growth of plant roots towards higher relative humidity level.
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: -As the roots bend towards the porous pot of water, it proves that the plant exhibits hydrotropism.
Detailed explanation-4: -Usually, roots grow towards the water and exhibit positive hydrotropism, while shoots grow against the water and exhibit negative hydrotropism.