Vessels are found in:
 

1. All angiosperms and some gymnosperm
2. Most of the angiosperm and few gymnosperms
3. All angiosperms, all gymnosperms, and some Pteridophyta
4. All pteridophyta

Subtopic:  Complex Tissue: Xylem |
 53%
From NCERT
AIPMT - 2002
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Four radial V.B. are found in:
1.  Dicot root
2.  Monocot root
3.  Dicot stem
4.  Monocot stem

Subtopic:  Vascular Tissue System |
 76%
From NCERT
AIPMT - 2002
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Which of the following statement is true:

1. Vessels are multicellular and with a wide lumen

2. Tracheids are multicellular and with a narrow lumen

3. Vessels are unicellular and with a narrow lumen

4. Tracheids are unicellular and with a wide lumen

Subtopic:  Complex Tissue: Xylem |
 61%
AIPMT - 2002
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The main function of lenticel is:
1. Transpiration
2. Guttation
3. Gaseous exchange
4. Bleeding

Subtopic:  Activity of Cork Cambium |
 93%
From NCERT
AIPMT - 2002
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Transition of exarch bundles of root to endarch bundles of stem occurs in:
1.  Epicotyl
2.  Hypocotyl
3.  Apical bud
4.  Coleoptile

Subtopic:  Complex Tissue: Xylem |
AIPMT - 1999
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The periderm includes:
1.  Secondary phloem
2.  Cork
3.  Cambium
4.  All of these

Subtopic:  Activity of Cork Cambium |
From NCERT
AIPMT - 1998
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Extrastelar secondary growth takes place by:
1.  Vascular cambium
2.  Phellogen
3.  Phellem
4.  Phelloderm

Subtopic:  Activity of Cork Cambium |
 51%
AIPMT - 1998
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