Root hairs are:
1. unicellular extensions of subsidiary cells
2. unicellular elongations of epidermal cells
3. unicellular elongations of ground tissue cells
4. appendages of the cuticle
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 |
Cuticle:
1. is a covering, both outside and inside of the epidermis
2. is well developed in roots
3. helps in prevention of water loss
4. is a proteinaceous layer
During the formation of primary plant body, dermal tissue, ground tissue and vascular tissue are produced by:
1. Primary meristems
2. Secondary meristems
3. Both primary and secondary meristems
4. Neither primary nor secondary meristems
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 |
Identify the tissue system from among the following:
1. Parenchyma | 2. Xylem |
3. Epidermis | 4. Phloem |
Regarding the epidermal tissue system of angiosperms:
I: | Cuticle is absent in roots |
II: | Guard cells are dumb-bell shaped in grasses and possess chloroplasts |
III: | Root hairs are multicellular and the stem hairs are unicellular |
1. Only I is correct
2. Only I and II are correct
3. Only II is correct
4. Only II and III are correct
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
Consider the given two statements:
I: | Parenchyma cells in plants play an important role in regeneration and wound healing. |
II: | They are living at maturity and usually have only primary walls. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is True but II is False
4. Both I and II are False