Class 11 · Morphology of Flowering Plants

Plant Morphology & Adaptations — NEET Biology

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📖 NCERT Source

In chapters 2 and 3, we talked about classification of plants based on morphological and other characteristics. For any successful attempt at classification and at understanding any higher plant (or for that matter any living organism) we need to know standard technical terms and standard definitions. We also need to know about the possible variations in different parts, found as adaptations of the plants to their environment, e.g., adaptations to various habitats, for protection, climbing, storage, etc.

NCERT Biology · Class 11 · Chapter 5 · Paragraph 5
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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?

📖 Solution & NCERT Explanation
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Correct answer: A 1, 2 and 3

Statement 1 is correct – NCERT states that descriptions were based on gross structural features and observable phenomena. Statement 2 is correct – before physiology, biology remained natural history. Statement 3 is incorrect – Katherine Esau reported curly top virus spreads via phloem, not xylem. Statement 4 is correct – despite morphological diversity, angiosperms are characterised by roots, stems, leaves, flowers, and fruits. Statement 5 is correct – NCERT mentions adaptations for various habitats, protection, climbing, and storage. Thus, the correct set is 1, 2, 4, 5.

❓ Frequently Asked Questions
What does NCERT say about chapters 2 and 3?
In chapters 2 and 3, we talked about classification of plants based on morphological and other characteristics. For any successful attempt at classification and at understanding any higher plant (or for that matter any living organism) we need to know standard technical terms and standard definitions.
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Morphology of Flowering Plants, Class 11 NCERT Biology.

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