A conjoint and open vascular bundle will be observed in the transverse section of
1. | Monocot root | 2. | Monocot stem |
3. | Dicot root | 4. | Dicot stem |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents
1. Collenchyma
2. Sclerenchyma
3. Xylem
4. Meristem
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Fibres are likely to be absent in
1. Secondary phloem
2. Secondary Xylem
3. Primary phloem
4. Leaves
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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
Match the parts labeled as A, B and C in the diagram of stem apex with their derivatives in the plant body:
A | B | C | |
1. | Dermatogen | Periblem | Plerome |
2. | Dermatogen | Plerome | Periblem |
3. | Epidermis | Vascular bundle | Cortex |
4. | Epidermis | Cortex | Vascular bundle |
In the transverse section of a monocot root given below, identify A, B, C and D:
A | B | C | D | |
1. | Epidermis | Exodermis | Endodermis | Pericycle |
2. | Exodermis | Epidermis | Endodermis | Pericycle |
3. | Epidermis | Exodermis | Pericyle | Endodermis |
4. | Exodermis | Epidermis | Pericyle | Endodermis |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Identify the option where the difference between the vascular bundles of Dicot and Monocot stem is not correctly mentioned:
|
Dicot stem |
Monocot stem |
1. |
Collateral and open |
Collateral and closed |
2. |
Arranged in a ring |
Scattered |
3. |
Larger toward the center |
Of uniform size |
4. |
Phloem parenchyma present |
Phloem parenchyma absent |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Identify the option where the difference between the anantomy of Dicot and Monocot root is not correctly mentioned:
Dicot root |
Monocot root |
||
1. |
Xylem bundles |
Numerous |
Vary between 2 and 6 |
2. |
Pith |
Small/absent |
Large/well developed |
3. |
Pericycle |
Gives rise to lateral roots, cambium and cork cambium |
Gives rise to lateral roots only |
4. |
Cambium |
Appears later as a secondary meristem |
Altogether absent |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
In the given diagram:
1. the lighter outer area is the heart wood or alburnum and is mechanically strong, resistant to decay, and less easily penetrated by wood-preservative chemicals
2. the lighter outer area is the Sapwood or alburnum and is involved in transport of water and minerals to the crown of the tree
3. the darker inner area is the heart wood or duramen and is involved in transport of water and minerals to the crown of the tree
4. the darker inner area is the sap wood or duramen and is mechanically strong, resistant to decay, and less easily penetrated by wood-preservative chemicals
The following diagram shows the anatomy of the root of an epiphytic orchid. The function of the structure marked X is:
1. Photosynthesis
2. Storage
3. Protective
4. Repair and healing