Tracheids differ from the tracheary elements in:

1. Having casparian strips
2. Being imperforate
3. Lacking nucleus
4. Being lignified

Subtopic:  Complex Tissue: Xylem |
AIPMT - 2014
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NEET 2026 - Target Batch - Vital
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Lenticels are involved in:

1. Gaseous exchange 2. Food transfer
3. Photosynthesis 4. Transpiration
Subtopic:  Activity of Cork Cambium |
 94%
From NCERT
AIPMT - 2013
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NEET 2026 - Target Batch - Vital
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The common bottle cork is a product of:

1. dermatogen

2. phellogen

3. xylem

4. vascular cambium

Subtopic:  Activity of Cork Cambium |
 76%
AIPMT - 2012
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Companion cells are closely associated with:

1. Sieve elements 2. Vessel elements
3. Trichomes 4. Guard cells
Subtopic:  Complex Tissue: Phloem |
 93%
From NCERT
AIPMT - 2012
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Closed vascular bundles lack:

1. Ground tissue

2. Conjuctive tissue

3. Cambium

4. Pith

Subtopic:  Vascular Tissue System |
 90%
From NCERT
AIPMT - 2012
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Water containing cavities in vascular bundles are found in:

1. Sunflower

2. Maize

3. Cycas

4. Pinus

Subtopic:  Monocot Stem |
 68%
AIPMT - 2012
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Gymnosperms are also called softwood spermatophytes because they lack:

1. Cambium

2. Phloem fibres

3. Thick-walled tracheids

4. Xylem fibres

Subtopic:  Complex Tissue: Xylem |
AIPMT - 2012
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Ground tissue includes:
1. all tissues except epidermis and vascular bundles
2. epidermis and cortex
3. all tissues internal to endodermis
4. all tissues external to endodermis
Subtopic:  Ground Tissue System |
 90%
AIPMT - 2011
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Inland plants, the guard cells differ from other epidermal cells in having:
1. mitochondria
2. endoplasmic reticulum
3. chloroplasts
4. cytoskeleton
Subtopic:  Epidermal Tissue System |
 80%
AIPMT - 2011
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The cork cambium, cork and secondary cortex are collectively called:
1.  phellogen
2.  periderm
3.  phellem
4.  phelloderm
Subtopic:  Activity of Cork Cambium |
 78%
From NCERT
AIPMT - 2011
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NEET 2026 - Target Batch - Vital
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