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Biology
Anatomy of Flowering Plants
86 questions from 36 papers, each with its answer.
- 86 questions
- 36 papers
- 2.44% of Biology
Anatomical features of root vs stem
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The transverse section of a plant part showed polyarch, radial and exarch xylem, with endodermis and pericycle. The plant part is identified as:Polyarch (many xylem bundles), radial (xylem and phloem on different radii), and exarch (protoxylem towards the periphery) xylem arrangement, along with the presence of endodermis and pericycle, are characteristic features of a monocot root.
Secondary growth - arrangement of vascular tissues
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Consider the following tissues in the stelar region of a stem showing secondary growth. (A) Primary xylem (B) Secondary xylem (C) Primary phloem (D) Secondary phloem. Arrange these in the correct sequence of their position from pith towards cortex.From the pith outward towards the cortex, the tissues are arranged as: Primary xylem (innermost, towards pith) → Secondary xylem → Secondary phloem → Primary phloem (outermost, towards cortex). So the sequence is (A), (B), (D), (C).
Types of meristems - lateral meristem
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Consider the following plant tissues: (A) Axillary buds (B) Fascicular vascular cambium (C) Interfascicular cambium (D) Cork cambium (E) Intercalary meristem. Identify the lateral meristems among the above.Lateral meristems occur parallel to the sides of an organ and are responsible for secondary growth: these include the fascicular (vascular) cambium (B), interfascicular cambium (C), and cork cambium (D). Axillary buds are part of the apical meristem system, and intercalary meristem is a separate category (found at internodes/leaf bases).
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