Stomata in grass leaf are
1. Dumb-bell shaped
2. Kidney shaped
3. Rectangular
4. Barrel shaped

Subtopic:  Monocot Leaf |
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Secondary xylem and phloem in dicot stem are produced by
1. Apical meristems
2. Vascular cambium
3. Phellogen
4. Axillary meristems

Subtopic:  Activity of Vascular Cambium |
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Casparian strips occur in
1. Epidermis
2. Pericycle
3. Cortex
4. Endodermis

 

Subtopic:  Anatomy of Root |
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Plants having little or no secondary growth are
1. Grasses
2. Deciduous angiosperms
3. Conifers
4. Cycads
Subtopic:  Monocot Stem |
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Identify the wrong statement in context of heartwood.

(1) Organic compounds are deposited in it

(2) it is highly durable

(3) It conducts water and minerals efficiently

(4) It comprises dead elements with highly lignified walls

Subtopic:  Types of Wood |
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The vascular cambium normal gives rise to.

(1) phelloderm                                         

(2) primary phloem

(3) secondary xylem                                 

(4) periderm

Subtopic:  Activity of Vascular Cambium |
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Which of the following is made up of dead cells?

1. Collenchyma

2. Phellem

3. Phloem

4. Xylem parenchyma

Subtopic:  Activity of Cork Cambium |
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Cortex is the region found between

(1) Epidermis and stele

(2) Pericycle and endodermis

(3) Endodermis and pith

(4) Endodermis and vascular bundle

Subtopic:  Anatomy of Root |
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The balloon-shaped structures called tyloses

(1) Original in the lumen of vessels

(2) characterise the sapwood

(3) are exetentions of xylem parenchyma cells into vessels

(4) are linked to the ascent of sap through xylem vessels

Subtopic:  Complex Tissue: Xylem |
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Specialised epidermal cells surrounding the guard cells are called ?

1. subsidiary cells

2. bulliform cells

3. lenticels

4. complementary cells

Subtopic:  Epidermal Tissue System |
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