Q. No.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 |
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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 |
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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 |
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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
In the given diagram showing the anatomy of a tree trunk, what are A, B, C and D respectively?
1. Secondary xylem, Secondary phloem, Periderm, Bark
2. Secondary phloem, Secondary xylem, Periderm, Bark
3. Secondary xylem, Secondary phloem, Phellem, Periderm
4. Secondary phloem, Secondary xylem, Phellem, Periderm
In the transverse section of a young dicot stem, the term ‘hard bast’ will be used for the structure labeled:
| 1. | A | 2. | B |
| 3. | C | 4. | D |
Which of the following statements are correct?
I. Most gymnosperms lack vessels in their xylem
II. Most gymnosperms lack sieve cells and albuminous cells
III. Most monocotyledonous plants lack phloem parenchyma
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
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Match the plants in Column I with the description of anatomy of vascular bundles in them in Column II and select the correct option from the codes given:
|
Column I |
Column II |
|
A. Dicot stem |
a. Collateral, closed and scattered in ground tissue |
|
B. Monocot stem |
b. Conjoint, collateral endarch and open |
|
C. Dicot root |
c. Radial, exarch and polyarch [usually more than 6] |
|
D. Monocot root |
d. Radial, exarch and 2 to 6 in number |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | d | c |
| 3. | a | b | d | c |
| 4. | b | a | c | d |
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