Q. No.The sieve tube elements and the companion cells are connected by:
1. sieve pores in their common transverse wall
2. sieve pores in their common longitudinal wall
3. pit fields in their common longitudinal wall
4. pit fields in their common transverse wall
1. sieve pores in their common transverse wall
2. sieve pores in their common longitudinal wall
3. pit fields in their common longitudinal wall
4. pit fields in their common transverse wall
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In a monocot stem:
| 1. | Each vascular bundle is surrounded by a sclerenchymatous bundle sheath |
| 2. | Ground tissue is very poorly developed |
| 3. | Vascular bundles are conjoint and open with water containing cavities |
| 4. | Phloem parenchyma is present |
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The apical meristems in the plants:
| 1. | occur at the tips of both roots and shoots and produce primary tissues |
| 2. | occur at the tip of root and base of the stem and produce secondary tissues |
| 3. | occur at the base of root and tip of the stem and produce primary tissues |
| 4. | occur at the tips of both roots and shoots and produce secondary tissues |
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In stems:
| 1. | the primary xylem is endarch with protoxylem towards the center and metaxylem towards the periphery |
| 2. | the primary xylem is endarch with metaxylem towards the center and protoxylem towards the periphery |
| 3. | the primary xylem is exarch with protoxylem towards the center and metaxylem towards the periphery |
| 4. | the primary xylem is exarch with metaxylem towards the center and protoxylem towards the periphery |
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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
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A transverse section of stem is stained first with safranin then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?
1. Red and green
2. Green and red
3. Orange and yellow
4. Purple and orange
Match the following and choose the correct option from below:
|
A. Meristem |
i. Photosynthesis, storage |
|
B. Parenchyma |
ii. Mechanical support |
|
C. Collenchyma |
iii. Actively dividing cells |
|
D. Sclerenchyma |
iv. Stomata |
|
E. Epidermal tissue |
v. Sclereids |
Options:
| A | B | C | D | E | |
|
1. |
i |
iii |
v |
ii |
iv |
|
2. |
iii |
i |
ii |
v |
iv |
|
3. |
ii |
iv |
v |
i |
iii |
|
4. |
v |
iv |
iii |
ii |
i |
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Match the following and choose the correct option from below
|
A |
Cuticle |
i. |
Guard cells |
|
B |
Bulliform cells |
ii. |
Single layer |
|
C |
Stomata |
iii. |
Waxy layer |
|
D |
Epidermis |
iv. |
Empty colourless cell |
Options:
|
1. |
A-iii |
B-iv |
C-i |
D-ii |
|
2. |
A-i |
B-ii |
C-iii |
D-iv |
|
3. |
A-iii |
B-ii |
C-iv |
D-i |
|
4. |
A-iii |
B-ii |
C-i |
D-iv |
Identify the tissue system from among the following:
| 1. Parenchyma | 2. Xylem |
| 3. Epidermis | 4. Phloem |
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Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is
| 1. Xylem | 2. Sclerenchyma |
| 3. Collenchyma | 4. Epidermis |
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