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Q. No.Collenchyma is also a living simple tissue just like parenchyma. However, it differs from the latter as it
1.
Contains cells that may be oval, spherical or polygonal
2.
Has small intercellular spaces
3.
Has pectin rich wall and provide mechanical support to growing parts of plants
4.
Can perform photosynthesis
Subtopic: Simple Tissue: Parenchyma | Simple Tissue: Chollenchyma & Sclerenchyma |
78%
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Gymnosperms
The correct one is/are
1. a and b only
2. a and c only
3. d only
4. a, b and d only
| a. | Lack vessels |
| b. | have sieve tube elements |
| c. | Have elongated tube like highly lignified main water transporting tissue |
| d. | Lack lateral meristem |
The correct one is/are
1. a and b only
2. a and c only
3. d only
4. a, b and d only
Subtopic: Complex Tissue: Xylem |
71%
From NCERT
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A mature sieve tube element transports food in plants
Which of the following features is/are true for this element?
a. Presence of peripheral cytoplasm
b. Possesses a large vacuole
c. Lacks nucleus
1. Only c
2. Only a and c
3. Only b and c
4. All a, b and c
Which of the following features is/are true for this element?
a. Presence of peripheral cytoplasm
b. Possesses a large vacuole
c. Lacks nucleus
1. Only c
2. Only a and c
3. Only b and c
4. All a, b and c
Subtopic: Complex Tissue: Phloem |
88%
From NCERT
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The companion cells are specialised parenchymatous cells which are closely associated with the sieve tubes elements. The sieve tube elements and companion cells are connected through
1. Perforations in their common walls
2. Perforations in their end walls
3. Pit fields between their common longitudinal walls
4. Bordered pits in their oblique end plates
1. Perforations in their common walls
2. Perforations in their end walls
3. Pit fields between their common longitudinal walls
4. Bordered pits in their oblique end plates
Subtopic: Complex Tissue: Phloem |
70%
From NCERT
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Identify the anatomical structure found in flowering plants on the basis of following features and select the correct option regarding this
(i) First formed primary complex tissue
(ii) Has living elements
(iii) Narrow sieve tubes
1. Produces secondary tissues
2. Gradually obliterated due to secondary growth
3. Performs photosynthesis
4. Conducts water and minerals only
(i) First formed primary complex tissue
(ii) Has living elements
(iii) Narrow sieve tubes
1. Produces secondary tissues
2. Gradually obliterated due to secondary growth
3. Performs photosynthesis
4. Conducts water and minerals only
Subtopic: Complex Tissue: Phloem |
From NCERT
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Dicot leaves are different from monocot leaves as in the former
| 1. | Guard cells are dumb-cell shaped |
| 2. | More stomata are present at abaxial surface as compared to adaxial surface |
| 3. | Trichomes are usually unicellular |
| 4. | Guard cells possess chloroplasts |
Subtopic: Dicot Leaf | Monocot Leaf |
75%
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Vascular bundles in wheat stems are
1. Scattered and open
2. Conjoint and open
3. Radial and closed
4. Conjoint and closed
1. Scattered and open
2. Conjoint and open
3. Radial and closed
4. Conjoint and closed
Subtopic: Vascular Tissue System |
70%
From NCERT
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Read the features related to the anatomical structure of a plant exhibit double fertilization
(i) It comprises a single layer
(ii) It has barrel-shaped cells with no intercellar spaces
(iii) It has Casparian strips
That structure is
1. Epidermis of monocot leaf
2. Pericycle of dicot root
3. Endodermis of monocot root
4. Endodermis of Pinus root
(i) It comprises a single layer
(ii) It has barrel-shaped cells with no intercellar spaces
(iii) It has Casparian strips
That structure is
1. Epidermis of monocot leaf
2. Pericycle of dicot root
3. Endodermis of monocot root
4. Endodermis of Pinus root
Subtopic: Anatomy of Root | Dicot Stem |
53%
From NCERT
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In all of the following cases monocot root is similar to dicot root, except
| 1. | Pericycle gives rise to lateral roots |
| 2. | Parenchymatous cells lie between the xylem and the phloem |
| 3. | Usually more than six (polyarch) xylem bundles |
| 4. | Exarch xylem |
Subtopic: Anatomy of Root |
83%
From NCERT
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Water-impermeable layer in dicot roots is
1. Sclerenchymatous in nature
2. Innermost layer of cortex
3. Occupy the central portion
4. Present just below pericycle
1. Sclerenchymatous in nature
2. Innermost layer of cortex
3. Occupy the central portion
4. Present just below pericycle
Subtopic: Anatomy of Root |
70%
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