Q. No.What is the number of correct statements amongst the following regarding the phloem tissue of plants?
| I: | Gymnosperms lack albuminous cells and sieve cells. |
| II: | The companion cells are specialized parenchymatous cells. |
| III: | Phloem parenchyma is absent in most of the monocotyledons. |
| IV: | Phloem fibers are generally absent in the primary phloem. |
1. 0
2. 2
3. 3
4. 4
Select incorrect statements from the given below:
| (i) | Endodermis with Casparian strips are found in the dicot stem. |
| (ii) | The endodermis is a part of the stele. |
| (iii) | Open vascular bundles are found in some monocots. |
| (iv) | Bulliform cells are found in the upper epidermis in the isobilateral leaf. |
1 (i) and (ii)
2. (ii) and (iii)
3. (i), (ii) and (iii)
4. Only (iv)
Assertion (A) : Phellogen is a secondary meristem that forms cork on the outer side and secondary cortex on the inner side.
Reason (R) : Phellogen is formed every year from hypodermis and pericycle in dicot root and dicot stem respectively.
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the reason is false.
4. If both Assertion and Reason are false statements.
A: Secondary growth is absent in monocots
R: Monocots lack vascular cambium.
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the reason is false.
4. If both Assertion and Reason are false statements.
3. Match the following columns.
|
Column I |
Column II |
|
A. Cuticle B. Bulliform cells C. Stomata D. Epidermis |
1. Guard cells 2. Single layer 3. Waxylayer 4. Empty colourless cell |
Codes
| Options: | A | B | C | D |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 3 | 2 | 4 | 1 |
| 4. | 3 | 2 | 1 | 4 |
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 |
In the given cross-section diagram of a tree A, B C and D respectively represent:
| A | B | C | D | |
| 1. | Periderm | Bark | Secondary phloem | Secondary xylem |
| 2. | Periderm | Bark | Secondary xylem | Secondary phloem |
| 3. | Bark | Periderm | Secondary phloem | Secondary xylem |
| 4. | Bark | Periderm | Secondary xylem | Secondary phloem |
Consider the given two statements:
| I: | At maturity, none of the components of xylem tissue is living. |
| II: | At maturity, none of the components of phloem tissue is dead. |
The correct statement/s is/are:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
The given diagram shows the transverse section of a portion of a:
| 1. | Monocot stem | 2. | Monocot root |
| 3. | Dicot stem | 4. | Dicot root |
What is the number of correct statements from those given below?
| I: | Primary xylem is endarch in roots |
| II: | Phloem parenchyma is present in most of the monocots. |
| III: | Phloem fibers are generally absent in the primary phloem. |
| IV: | Companion cells are collenchymatous cells. |
| V: | Angiosperms lack vessels in their xylem. |
1. 0
2. 1
3. 2
4. 3
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