Structural Organisation – Anatomy of Flowering Plants Quiz - ICSE Class 11 Biology

Free practice quiz: Structural Organisation – Anatomy of Flowering Plants (ICSE Class 11 Biology). 37 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 11 Biology practice quiz has 37 multiple-choice questions on Structural Organisation – Anatomy of Flowering Plants, and 37 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following vascular tissues is primarily responsible for the unidirectional upward transport of water and dissolved minerals from the roots to the aerial parts of a plant?

   1. Phloem
   2. Xylem
   3. Cambium
   4. Epidermis
   Show answer

   Answer: B. Xylem

   Xylem is the vascular tissue in plants that conducts water and dissolved nutrients upward from the root and also helps to support the plant structurally. Phloem, on the other hand, transports sugars produced during photosynthesis.

2. The tissue responsible for primary growth in length at the root apex is the:

   1. Apical meristem
   2. Lateral meristem
   3. Intercalary meristem
   4. Procambium
   Show answer

   Answer: A. Apical meristem

   Apical meristems are regions of actively dividing cells located at the tips of shoots and roots. They are responsible for primary growth, which leads to an increase in length.

3. The opening and closing of stomata are regulated by changes in the turgor pressure of:

   1. Epidermal cells
   2. Guard cells
   3. Mesophyll cells
   4. Subsidiary cells
   Show answer

   Answer: B. Guard cells

   Guard cells are specialized epidermal cells that surround the stomatal pore. Changes in their turgor pressure, influenced by factors like light intensity and CO2 concentration, cause the stomata to open or close, controlling gas exchange and transpiration.

4. The presence of vessel elements with perforated end walls, forming continuous tubes, is characteristic of:

   1. Phloem
   2. Xylem
   3. Collenchyma
   4. Epidermis
   Show answer

   Answer: B. Xylem

   Vessel elements are the primary water-conducting cells in xylem. They are dead at maturity and have perforated end walls called perforation plates, which allow for efficient, uninterrupted flow of water.

5. The bundle sheath cells in the leaves of C4 plants are characteristically rich in:

   1. Chloroplasts with prominent grana
   2. Lysosomes
   3. Peroxisomes
   4. Mitochondria with extensive cristae
   Show answer

   Answer: A. Chloroplasts with prominent grana

   In C4 plants, the Calvin cycle occurs in the bundle sheath cells, which have a high concentration of chloroplasts with well-developed grana, enabling efficient photosynthesis under high light intensity.

More questions in this quiz

Answers and explanations are in the full quiz.

1. The presence of secondary growth in dicotyledonous stems is indicated by:
2. In a typical dicot root, the vascular tissues are arranged in a radial manner. The order of arrangement from the center outwards is generally:
3. The Casparian strip, a band of thickened impervious cell walls, is a characteristic feature found in which layer of a plant root, and what is its primary function?
4. A plant tissue that exhibits uniform thickening of the cell walls, is typically found supporting young, growing stems and petioles, and provides mechanical strength is:
5. Heartwood, the central, dead region of a woody stem, differs from sapwood, the outer living region, primarily in:
6. The primary function of the cuticle, a waxy layer on the epidermis of aerial plant parts, is:
7. In a dicot leaf, the mesophyll is typically differentiated into:
8. The cork cambium (phellogen) produces:
9. The vascular bundles in the stem of a monocotyledonous plant are typically described as:
10. Which type of cell is characteristically found in the phloem, responsible for transporting sugars and also possessing sieve areas on their walls?
11. Which of the following cells are dead at maturity and provide mechanical strength due to their uniformly thickened lignified secondary cell walls?
12. In a dicot root, the pericycle is important for:
13. Secondary xylem, commonly known as wood, is produced by the activity of the:
14. The presence of intercellular spaces within the mesophyll tissue of a leaf facilitates:
15. In a dicot stem, the vascular bundles are arranged in a ring. The order of tissues from the periphery inwards is generally:
16. Which of the following is a characteristic of sieve tube elements in the phloem?
17. The radial arrangement of xylem and phloem in roots is called:
18. The outermost layer of cells in a plant root that is responsible for absorbing water and minerals is the:
19. In monocotyledonous leaves, the vascular bundles (veins) are:
20. Which layer in the stem forms the boundary between the cortex and the vascular cylinder?
21. The cambium responsible for secondary growth in dicot stems is located:
22. The tissue responsible for the upward transport of manufactured food (sugars) from the leaves to other parts of the plant is:
23. A plant structure exhibiting a scattered arrangement of vascular bundles, conjoint and collateral organization, presence of sclerenchymatous bundle sheath, and absence of secondary growth would most likely be a:
24. The development of bark in woody plants involves the activity of:
25. Which of the following tissues forms the bulk of the herbaceous dicotyledonous stem, comprising parenchyma cells?
26. In a dicot leaf, the palisade mesophyll cells are primarily adapted for:
27. In a dicot leaf, the stomata are typically more numerous on:
28. The tissue composed of radially elongated cells with thickened primary walls at the corners, providing mechanical support to growing stems and petioles, is known as:
29. The function of companion cells in the phloem is to:
30. Which of the following is a characteristic of the vascular bundles in a dicot root?
31. The central region of a herbaceous dicot stem, consisting of parenchyma cells and involved in storage, is called the:
32. The gradual transition from primary tissues to secondary tissues in a woody stem, with the formation of annual rings, is a result of:

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