Q. No.The transverse section of a plant shows following anatomical features:
a.
Large number of scattered vascular bundles surrounded by bundle sheath.
b.
Large conspicuous parenchymatous ground tissue.
c.
Vascular bundles conjoint and closed.
d.
Phloem parenchyma absent.
Identify the category of plant and its part :
1. Monocotyledonous root
2. Dicotyledonous stem
3. Dicotyledonous root
4. Monocotyledonous stem
Large, empty colorless cells of the adaxial epidermis along the veins of grass leaves are
(1) Lenticels
(2) Guard cells
(3) Bundle sheath cells
(4) Bulliform cells
Which of the following statements about cork cambium is incorrect?
(1) It forms a secondary cortex on its outside
(2) It forms a part of periderm
(3) It is responsible for the formation of lenticels
(4) It is a couple of layers thick
Identify the incorrect statement.
| 1. | Sapwood is involved in conduction of water and minerals from roots to leaves. |
| 2. | Sapwood is the innermost secondary xylem and is lighter in colour |
| 3. | Due to deposition of tannins, resins, oils etc., heartwood is dark in colour. |
| 4. | Heart wood does not conduct water but gives mechanical support. |
What is incorrect about Cycas?
1. Its xylem has vessels
2. It has circinate venation
3. It does not have well organised female flower
4. Its roots possess some blue-green algae
Regeneration of damaged growing grass following grazing is largely due to:
| 1. | Lateral meristem | 2. | Apical meristem |
| 3. | Intercalary meristem | 4. | Secondary meristem |
In the dicot root, the vascular cambium originates from:
| 1. | Tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem |
| 2. | Cortical region |
| 3. | Parenchyma between endodermis and pericycle |
| 4. | Intrafascicular and interfascicular tissue in a ring |
Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified:
| A | B | C | D | |
| 1. | Guard cell | Stomatal aperture | Subsidiary Cell | Epidermal Cell |
| 2. | Epidermal Cell | Guard Cell | Stomatal aperture | Subsidiary cell |
| 3. | Epidermal Cell | Subsidiary Cell | Stomatal aperture | Guard Cell |
| 4. | Subsidiary Cell | Epidermal Cell | Guard Cell | Stomatal aperture |
From the outside to the inside of a mature woody stem, the correct sequence of layers will be:
1. Bark, Vascular cambium, Wood [xylem], Pith
2. Bark, Wood [xylem], Vascular cambium, Pith
3. Pith, Wood [xylem], Vascular cambium, Bark
4. Pith, Vascular cambium, Wood [xylem], Bark
Match List I with List II
| List I | List II | ||
| (a). | Cells with active cell division capacity |
(i). | Vascular tissues |
| (b). | Tissue having all cells similar in structure and function |
(ii). | Meristematic tissue |
| (c). | Tissue having different types of cells |
(iii). | Sclereids |
| (d). | Dead cells with highly thickened walls and narrow lumen |
(iv). | Simple tissue |
Select the correct answer from the options given below:
| Options: | (a). | (b). | (c). | (d). |
| 1. | (i). | (ii). | (iii). | (iv). |
| 2. | (iii). | (ii). | (iv) | (i). |
| 3. | (ii). | (iv). | (i). | (iii). |
| 4. | (iv). | (iii). | (ii). | (i). |
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