Secondary growth is unlikely to be seen in:
1. Cycas
2. Sunflower plant
3. Wheat plant
4. Mango tree
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). |
Match List-I with List-II.
List-I | List-I | ||
(a) | Lenticels | (i) | Phellogen |
(b) | Cork cambium | (ii) | Suberin deposition |
(c) | Secondary cortex | (iii) | Exchange of gases |
(d) | Cork | (iv) | Phelloderm |
Choose the correct answer from the options given below:
(a) | (b) | (c) | (d) | |
1. | (ii) | (iii) | (iv) | (i) |
2. | (iv) | (ii) | (i) | (iii) |
3. | (iv) | (i) | (iii) | (ii) |
4. | (iii) | (i) | (iv) | (ii) |
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 |
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
Axillary bud and terminal bud are derived from the activity of:
1. Lateral meristem
2. Intercalary meristem
3. Apical meristem
4. Parenchyma
The periderm includes:
1. Secondary phloem
2. Cork
3. Cambium
4. All of these
Some vascular bundles are described as open because these:
1. | are not surrounded by pericycle |
2. | are surrounded by pericycle but no endodermis |
3. | are capable of producing secondary xylem and phloem |
4. | possess conjunctive tissue between xylem and phloem |
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 |
Compared to a dicot root, a monocot root has:
1. Many xylem bundles
2. Inconspicuous annual rings
3. Relatively thicker periderm
4. More abundant secondary xylem