seminar biology spm

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Page 1: seminar biology spm
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PHENOMENON OF WILTING IN PLANTS

• Excessive use of chemical fertilisers will cause plants to wilt.

• Fertilisers will dissolve in the soil & cause the soil water to be hypertonic to the root cells of the plant.

• Water diffuses out of the root cells cells lose water to their surrounding & shrinks plasmolysis occurs flaccid plant wilt.

• No water is given continue wilt & die.

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