Q. No.Age of a tree can be estimated by:
1. biomass
2. number of annual rings
3. diameter of its heartwood
4. its height and girth
1. biomass
2. number of annual rings
3. diameter of its heartwood
4. its height and girth
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Interfascicular cambium develops from the cells of:
| 1. Xylem parenchyma | 2. Endodermis |
| 3. Pericycle | 4. Medullary rays |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?
| 1. Secondary xylem | 2. Secondary phloem |
| 3. Protoxylem | 4. Cortical cells |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Tracheids differ from the tracheary elements in
1. Having casparian strips
2. Being imperforate
3. Lacking nucleus
4. Being lignified
A major characteristic of the monocot root is the presence of
1. Scattered vascular bundles
2. Vasculature without cambium
3. Cambium sandwiched between phloem and xylem along the radius
4. Open vascular bundles
Vascular bundles in monocotyledons are considered closed because
1. Cambium is absent
2. There are no vessels with perforations
3. Xylem is surrounded all around by phloem
4. A bundle sheath surrounds each bundle
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem
(a) Secondary cortex
(b) Wood
(c) Secondary phloem
(d) Phellem
The correct order is:
| 1. (a), (b), (d), (c) | 2. (d), (a), (c), (b) |
| 3. (d), (c), (a), (b) | 4. (c), (d), (b), (a) |
Specialised epidermal cells surrounding the guard cells are called:
1. Lenticels
2. Complementary cells
3. Subsidiary cells
4. Bulliform cells
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Cortex is the region found between
1. endodermis and vascular bundle
2. epidermis and stele
3. pericycle and endodermis
4. endodermis and pith
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The balloon-shaped structures called tyloses
1. are linked to the ascent of sap through xylem vessels
2. originate in the lumen of vessels
3. characterize the sapwood
4. are extensions of xylem parenchyma cells into vessels
© 2024 GoodEd Technologies Pvt. Ltd.