Q. No.Phloem fibres are
| 1. | also known as bast fibres |
| 2. | made up of sclerenchymatous cells |
| 3. | absent in primary phloem |
| 4. | All of these |
Subtopic: Â Complex Tissue: Phloem |
 97%
Level 1: 80%+
Hints
Why do sieve tubes require companion cells for their functioning?
| 1. | Companion cells provide structural support |
| 2. | Sieve tubes lack nucleus and depend on companion cells for metabolic activities |
| 3. | Companion cells help in water transport |
| 4. | Companion cells produce hormones |
Subtopic: Â Complex Tissue: Phloem |
 95%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Companion cells are closely associated with:
| 1. | Sieve elements | 2. | Vessel elements |
| 3. | Trichomes | 4. | Guard cells |
Subtopic: Â Complex Tissue: Phloem |
 94%
Level 1: 80%+
Hints
Regarding the relationship between sieve tube elements and companion cells in angiosperms:
| 1. | Sieve tube elements have a central nucleus, while companion cells lack a nucleus. |
| 2. | Sieve tube elements have a nucleus and control the functions of companion cells. |
| 3. | Sieve tube elements lack a nucleus, and their functions are controlled by the nucleus of companion cells. |
| 4. | Companion cells lack cytoplasm and are primarily involved in providing structural support to sieve tube elements |
Subtopic: Â Complex Tissue: Phloem |
 92%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Pressure gradient in the sieve tubes is maintained by
| 1. | companion cells | 2. | phloem fibres |
| 3. | phloem parenchyma | 4. | All of these |
Subtopic: Â Complex Tissue: Phloem |
 91%
Level 1: 80%+
Hints
Which of the following is true for phloem parenchyma
| 1. | made up of elongated, tapering cylindrical cells |
| 2. | have dense cytoplasm and nucleus |
| 3. | stores food material and resins, latex and mucilage |
| 4. | All of the above |
Subtopic: Â Complex Tissue: Phloem |
 91%
Level 1: 80%+
Hints
Match Column-I with Column-II:
1. A-4, B-3, C-1, D-2
2. A-1, B-2, C-3, D-4
3. A-3, B-1, C-4, D-2
4. A-4, B-3, C-2, D-1
| Column-I (Tissue) |
Column-II (Function) |
||
| A. | Collenchyma | 1. | Transport of food |
| B. | Sclerenchyma | 2. | Transport of water |
| C. | Xylem | 3. | Permanent mechanical support |
| D. | Phloem | 4. | Mechanical support in young parts |
2. A-1, B-2, C-3, D-4
3. A-3, B-1, C-4, D-2
4. A-4, B-3, C-2, D-1
Subtopic: Â Simple Tissue: Chollenchyma & Sclerenchyma |Â Complex Tissue: Xylem |Â Complex Tissue: Phloem |
 89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Match each item in Column I with one in Column II and choose your answer from the codes given below:
|
Phloem components |
Feature |
|
A. Sieve tube elements |
a. Commercial use as in jute, flax and hemp |
|
B. Companion cells |
b. Plasmodesmatal connections and storage function |
|
C. Phloem parenchyma |
c. Maintaining pressure gradient in sieve tubes |
|
D. Phloem fibers |
d. Perforated end walls |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | d | c |
| 3. | b | d | c | a |
| 4. | d | c | b | a |
Subtopic: Â Complex Tissue: Phloem |
 88%
Level 1: 80%+
Hints
Similar to how Sieve Tube elements are associated with companion cells, sieve cells are associated with:
1. Albuminous cell
2. Lenticel
3. Bulliform cell
4. Guard cell
Subtopic: Â Complex Tissue: Xylem |Â Complex Tissue: Phloem |
 88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Match the following columns and choose the correct option
1. a(ii), b(iv), c(i), d(iii)
2. a(iii), b(i), c(ii), d(iv)
3. a(iii), b(i), c(iv), d(ii)
4. a(ii), b(i), c(iv), d(iii)
| Column I | Column II | ||
| a. | Vessels | (i) | Obliterated central lumen |
| b. | Xylem fibres | (ii) | Elongated cells with tapering ends |
| c. | Xylem parenchyma | (iii) | Absent in gymnosperms |
| d. | Tracheids | (iv) | Thin walled living cells |
1. a(ii), b(iv), c(i), d(iii)
2. a(iii), b(i), c(ii), d(iv)
3. a(iii), b(i), c(iv), d(ii)
4. a(ii), b(i), c(iv), d(iii)
Subtopic: Â Complex Tissue: Xylem |Â Complex Tissue: Phloem |
 88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
© 2026 GoodEd Technologies Pvt. Ltd.