NEET Biology Chapter 5

Structural Organisation in Plants and Animals

The description of the diverse forms of life on earth was made only by observation through naked eyes or later through magnifying lenses and microscopes. This description is mainly of gross structural features, both external and internal. In addition, observable and perceivable living phenomena were also recorded as part of this description.

The wide range in the structure of higher plants will never fall to fascinate us. Even though the anglosperms show such a diversity in external structure or morphology, they are all characterised by presence of roots, stems, leaves, flowers and fruits.

If you pull out any weed you will see that all of them have roots, stems, and leaves. They may be bearing flowers and fruits. The underground parts of the flowering plant is the root system while the portion above the ground forms the shoot system

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