Axillary bud and terminal bud are derived from the activity of:
1. Lateral meristem
2. Intercalary meristem
3. Apical meristem
4. Parenchyma
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 |
Diffuse porous wood is characteristic of those plants which are growing in:
1. Alpine region
2. Cold winter regions
3. Temperate climate
4. Tropics
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
Secondary growth is unlikely to be seen in:
1. Cycas
2. Sunflower plant
3. Wheat plant
4. Mango tree
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
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 |