Large, empty colorless cells of the adaxial epidermis along the veins of grass leaves are

1. Lenticels

2. Guard cells

3. Bundle sheath cells

4. Bulliform cells

Subtopic:  Monocot Leaf |
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Which of the following statements about cork cambium is incorrect?

1. It forms a secondary cortex on its outside

2. It forms a part of periderm

3. It is responsible for the formation of lenticels

4. It is a couple of layers thick

Subtopic:  Activity of Cork Cambium |
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Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified –

 

          A           B          C           D
1. Guard cell Stomatal aperture Subsidiary Cell Epidermal Cell
2. Epidermal Cell Guard Cell Stomatal aperture Subsidiary cell
3. Epidermal Cell Subsidiary Cell Stomatal aperture Guard Cell
4. Subsidiary Cell Epidermal Cell Guard Cell Stomatal aperture
Subtopic:  Epidermal Tissue System |
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Some vascular bundles are described as open
because these :
1. are not surrounded by pericycle
2. are surrounded by pericycle but no
endodermis
3. are capable of producing secondary xylem
and phloem
4. possess conjunctive tissue between xylem
and phloem

Subtopic:  Vascular Tissue System |
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The periderm includes :
1.  Secondary phloem
2.  Cork
3.  Cambium
4.  All of these

Subtopic:  Activity of Cork Cambium |
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Main function of lenticel is : -
1. Transpiration
2. Guttation
3. Gaseous exchange
4. Bleeding

Subtopic:  Activity of Cork Cambium |
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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 |
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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 |
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Axillary bud and terminal bud derived from the activity of : -
1. Lateral meristem
2. Intercalary meristem
3. Apical meristem
4. Parenchyma

Subtopic:  Meristematic Tissue:Classification |
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The apical meristem of the root is present
1. Only in radicals
2. Only in tap roots
3. Only in adventitious roots
4. In all the roots

Subtopic:  Meristematic Tissue: Root Apex |
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