The wide range in the structure of higher plants will never fail to fascinate us. Even though the angiosperms show such a large diversity in external structure or morphology, they are all characterised by presence of roots, stems, leaves, flowers and fruits.
Consider the following statements: 1. Early descriptions of life forms were based only on gross structural features and perceivable living phenomena. 2. Before physiology was established, biology was mainly studied as natural history. 3. Katherine Esau demonstrated that curly top virus spreads through xylem tissue. 4. All angiosperms, despite large diversity, are characterised by the presence of roots, stems, leaves, flowers, and fruits. 5. Adaptations in plants may include modifications for habitats, protection, climbing, and storage. Which of the above statements are correct?
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