In a plant, the protoxylem lies next to the phloem. This arrangement of xylem will be called:
1. Stelar
2. Extrastelar
3. Endarch
4. Exarch

Subtopic:  Complex Tissue: Xylem |
 63%
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In dicot roots, initiation of lateral roots takes place in the cells of:
1. Endodermis
2. Pericycle
3. Epiblema
4. Hypodermis
Subtopic:  Anatomy of Root |
 81%
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Identify the simple tissue of plants shown in the given figure:

1. Parenchyma
2. Collenchyma
3. Sclereids
4. Sclerenchyma fibres
Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 89%
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For the formation of interfascicular cambium and cork cambium the parenchyma cells first undergo:
1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. Reverse differentiation
Subtopic:  Activity of Cork Cambium |
 75%
From NCERT
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Which of the following will not be true for gymnosperms?
1. Gymnosperms lack vessels in their xylem.
2. Gymnosperms have albuminous cells and sieve cells.
3. Gymnosperms lack sieve tubes and companion cells.
4. Gymnosperms lack secondary growth.
Subtopic:  Complex Tissue: Xylem | Complex Tissue: Phloem | Secondary Growth in Root (OLD NCERT) |
 74%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I [Plant part] Column II [Vascular bundle]
A Dicot root P Conjoint and open
B Monocot root Q Conjoint and closed
C Dicot stem R Radial, exarch, 2-6 in number
D Monocot stem S Radial, exarch, polyarch [more than 6]
Codes:
A B C D
1. R S Q P
2. R S P Q
3. P Q R S
4. Q P S R
Subtopic:  Anatomy of Root | Dicot Stem | Monocot Stem |
 83%
From NCERT
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All the following produce secondary tissues in a plant body except:
1. Fascicular vascular cambium
2. Interfascicular cambium
3. Cork-cambium
4. Intercalary meristem
Subtopic:  Meristematic Tissue:Classification (OLD NCERT) |
 89%
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In a monocot stem:
I: hypodermis is collenchymatous
II: vascular bundles are conjoint and closed
III: phloem parenchyma is absent
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic:  Monocot Stem |
 77%
From NCERT
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A transverse section of a plant part shows the following features:

I: Innermost layer of cortex has casparian strips.
II: Pericycle has parenchymatous cells.
III: Radially arranged two to four xylem and phloem patches.

This transverse section must be of:
1. Dicot root
2. Monocot root
3. Dicot stem
4. Monocot stem

Subtopic:  Anatomy of Root |
 85%
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Identify the incorrect statement regarding guard cells in the epidermal tissue system?
 
1. They enclose stomata.
2. They are bean shaped in grasses.
3. The outer walls are thin and the inner walls are highly thickened.
4. They possess chloroplasts.
Subtopic:  Epidermal Tissue System |
 83%
From NCERT
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