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Non-succulent perennials
These are actually the true xerophytes or drought resistants, because they possess a number of morphological, anatomical and physiological characteristics which enable them to withstand critical dry conditions. They exhibit rapid root growth and form an extensive root system to tap water from the soil in a most efficient manner. The leaf size is greatly reduced and in many xerophytic grasses, leaves roll on to reduce the leaf surface for restricting loss of water due to transpiration. Some of the examples are Calotropis procera, Acacia nelotica, Saccharurn munja In non-succulent xerophytes, root system is very extensive e.g. Calotropis. Important adaptations to minirnise the loss of water through transpiration are:
Phototropic curvature is the result of uneven distribution of : 1. Gibberellin 2. Phytochrome 3. Cytokinins 4. Auxin Auxin
WHAT IS THE FUNCTION OF CELL COAT
Determination of Nicotinic acid The chemical methods of assay are based on colour reactions of pyridine. Nicotinic acid and nicotinamide are converted by cyanogen bromide into
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describe and compare reproduction in all the kingdoms except kingdom animalia
Q. Investigation of Tricuspid regurgitation by Echo Doppler? Investigations ECG in secondary TR shows evidence of right atrial overload and right ventricular hypertrophy
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