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Plant Growth and Development

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Advanced Botany

Plant Growth and Development
Organisms and Populations
Ecosystem
Biodiversity and Conservation
Environmental Issues
Microbes in Human Welfare
Strategies for Enhancement in Food Production
Molecular Basis of Inheritance
Principles of Inheritance and Variation
Sexual Reproduction in Flowering Plants
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Cell Cycle and Cell Division
Cell-The Unit of Life
Anatomy of Flowering Plants
Morphology of Flowering Plants
Plant Kingdom
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  1. Highest auxin concentration occurs
    1. in growing tips
    2. in leaves
    3. at base of plant organs
    4. in xylem and phloem
Correct Option: A

Highest concentration of auxins occurs at the growing tips. This was proved by Went in 1928 by his experiment on Avena coleoptile. It was demonstrated that auxins are synthesized at the tips and then translocated downwards where they cause growth.


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