The type of vascular bundles shown in the given figure would most likely be seen in:
1. | Dicotyledonous stem | 2. | Roots |
3. | Monocotyledonous stem | 4. | Leaves |
The vascular bundles in a dicot stem are:
1. conjoint, open with endarch protoxylem
2. conjoint, closed with endarch protoxylem
3. conjoint, open with exarch protoxylem
4. conjoint, closed with exarch protoxylem
What would be true for A and B shown in the given diagram?
1. | A shows open stomatal aperture while B shows closed stomatal aperture |
2. | A shows closed stomatal aperture while B shows open stomatal aperture |
3. | A shows the stomata in grasses |
4. | B shows the stomata in grasses |
The incorrect statement regarding epidermal tissue system in angiosperms would be:
1. It comprises of epidermal cells and stomata but not the appendages such as trichomes
2. It is the outermost layer of the primary plant body forming a continuous layer
3. It is usually single layered
4. Cells are parenchymatous with a large vacuole
All the following are true for trichomes except:
1. | they are usually unicellular |
2. | they may be branched |
3. | they may be secretory |
4. | they help in prevention of water loss due to transpiration |
Mesophyll cells present in the ground tissue of leaves are:
1. chloroplasts lacking thin walled cells
2. chloroplasts containing thick walled cells
3. chloroplasts containing thin walled cells
4. chloroplasts lacking thick walled cells
Open vascular bundles:
I: | have cambium present between xylem and phloem |
II: | possess the ability to form secondary tissues |
III: | are rare in dicotyledonous stems |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
In conjoint type of vascular bundles:
I: | xylem and phloem are jointly situated on the same radius of vascular bundles. |
II: | xylem is usually located on the outer side of the phloem. |
1. Only I is correct | 2. Only II is correct |
3. Both are correct | 4. Both are incorrect |
Casparian strips are:
1. | waxy deposition of suberin on only the tangential walls of the endodermal cells |
2. | waxy deposition of suberin on only the radial walls of the endodermal cells |
3. | waxy deposition of suberin on both tangential and radial walls of the endodermal cells |
4. | waxy deposition of lignin on both tangential and radial walls of the endodermal cells |
In a dicot root, the number of patches of xylem and phloem are usually:
1. | 2 to 4 | 2. | 4 to 6 |
3. | 6 to 8 | 4. | 8 to 10 |