Principles of Ecology. — BIO BOTANY STD 12 — Question
Tamilnadu BoardEnglish MediumSTD 12BIO BOTANYPrinciples of Ecology.3 Marks
Question
How physical dryness differ from physiological dryness?
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Answer
Physical dryness: In these habitats, soil has a little amount of water due to the inability of the soil to hold water because of low rainfall.
Physiological dryness: In these habitats, water is sufficiently present but plants are unable to absorb it because of the absence of capillary spaces. Example: Plants in salty and acidic soil.
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