Which of the following is true about tracheids and vessels
1. Tracheids are multicellular with narrow lumen
2. Tracheids are unicellular with wide lumen
3. Vessels are multicellular with wide lumen
4. Vessels are unicellular with narrow lumen

Subtopic:  Complex Tissue: Xylem |
 57%

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The cells of the quiescent center are characterized by
1. having dense cytoplasm and prominent nuclei
2. having light cytoplasm and small nuclei
3. dividing regularly to add to the corpus
4. dividing regularly to add to tunica

Subtopic:  Tissue: Introduction & Classification (OLD NCERT) |

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Common feature in vessel elements and sieve tube elements is

1. Enucleate condition 2. Presence of P-protein
3. Thick secondary wall 4. Pores on lateral walls
Subtopic:  Complex Tissue: Xylem | Complex Tissue: Phloem |

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Secondary growth is best observed in
1. Teak and Pine
2. Deodar and Fern
3. Wheat and maiden Hair Fern
4. Sugarcane and Sunflower

Subtopic:  Secondary Growth in Root (OLD NCERT) |
 60%

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Passage cells are thin walled cells found in
1. Phloem elements to serve as entry points
2. Testa of seeds for emergence of embryonal axis
3. Central area of style for passage of pollen tube
4. Endodermis of roots to facilitate rapid transport of water from cortex to pericycle

Subtopic:  Complex Tissue: Xylem |
 73%

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The length of different internodes in a culm of sugarcane is variable because of
1. Size of leaf lamina at the node below each internode
2. Intercalary meristem
3. Shoot apical meristem
4. Position of axillary buds

Subtopic:  Meristematic Tissue:Classification (OLD NCERT) |
 72%

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Vascular tissue in flowering plants develops from
1. Dermatogen
2. Plerome
3. Periblem
4. Phellogen

Subtopic:  Vascular Tissue System |

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The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is

1. differentiating 2. maturing
3. elongating 4. widening
Subtopic:  Complex Tissue: Xylem |

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In barley stem, vascular bundles are
1. closed and radial
2. open and scattered
3. closed and scattered
4. open and in a ring

Subtopic:  Vascular Tissue System |
 70%

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Palisade parenchyma is absent in leaves of
1. Gram
2. Sorghum
3. Mustard
4. Soybean

Subtopic:  Dicot Leaf | Monocot Leaf |
 58%

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