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Why is suitable temperature necessary for plants?

Answer and explanation

Correct answer: It helps the process of growth

Direct answer: Option A is correct. Plants need a suitable temperature because temperature affects germination, enzyme activity, photosynthesis, respiration, water absorption, and overall growth. Each plant has a favourable temperature range. If the temperature is too low, chemical processes slow down and growth may stop; if it is too high, water loss increases and tissues may be damaged. Therefore, suitable temperature supports normal development from seed to mature plant. Option A states this basic relationship correctly. Option B is wrong because suitable temperature does not always stop roots; it normally helps root activity and growth. Option C is wrong because temperature does not itself remove soil, although extreme heat can contribute indirectly to soil problems. Option D is wrong because temperature does not block sunlight; sunlight is a separate environmental factor, and plants often use it for photosynthesis. Exam cue: suitable temperature helps life processes and growth.

Related tags

TemperaturePlant GrowthClimate

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