Q. No.The apical meristem of the root is present:
1. Only in radicals
2. Only in tap roots
3. Only in adventitious roots
4. In all the roots
1. Only in radicals
2. Only in tap roots
3. Only in adventitious roots
4. In all the roots
Diffuse porous wood is characteristic of those plants which are growing in:
1. Alpine region
2. Cold winter regions
3. Temperate climate
4. Tropics
Secondary growth is unlikely to be seen in:
1. Cycas
2. Sunflower plant
3. Wheat plant
4. Mango tree
What happens in plants during vascularisation:
| 1. | Differentiation of procambium, formation of primary phloem followed by the formation of primary xylem |
| 2. | Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously |
| 3. | Formation of procambium, primary phloem, and xylem simultaneously |
| 4. | Differentiation of procambium followed by the formation of secondary xylem |
Axillary bud and terminal bud are derived from the activity of:
1. Lateral meristem
2. Intercalary meristem
3. Apical meristem
4. Parenchyma
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). |
Select the correct pair.
| 1. | Cells of medullary rays that form part of a cambial ring - Interfascicular cambium |
| 2. | Loose parenchyma cells rupture the epidermis and form a lens-shaped opening in the bark - Spongy parenchyma |
| 3. | Large colorless empty cells in the epidermis of grass leaves - Subsidiary cells |
| 4. | In dicot leaves, vascular bundles are surrounded by large thick-walled cells - Conjunctive tissue |
An important step in the manufacture of pulp for the paper industry from the woody tissues of plants is the:
| 1. | Removal of water from the wood by prolonged heating at approximately 50º |
| 2. | Treatment of wood with chemicals that break down cellulose |
| 3. | Removal of oils present in the wood by treatment with suitable chemicals |
| 4. | Preparation of pure cellulose by removing lignin |
In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues:
1. Stem and root
2. All parts
3. Shoot tips and root tips
4. Flowers, fruit, and leaves
Ectophloic siphonostele is found in:
1. Osmunda and Equisetum
2. Adiantum and Cucurbitaceae
3. Marsilea and Botrychium
4. Dicksonia and Maiden hair fern
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