Age of a tree can be estimated by?

1. its height and girth

2. biomass

3. number of annual rings

4. diameter of its heartwood

Subtopic:  Types of Wood |
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The common bottle cork is a product of

(1) Dermatogens

(2) phellogen

(3) xylem

(4) vascular cambium

Subtopic:  Activity of Cork Cambium |
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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 |
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Closed vascular bundles lack

(1) ground tissue

(2) conjunctive tissue

(3) cambium

(4) pith

Subtopic:  Vascular Tissue System |
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Water containing cavities in vascular bundles are found in

1. sunflower

2. maize

3. Cycas

4. Pinus

Subtopic:  Monocot Stem |
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Ground tissues 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:  Epidermal Tissue System |
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In land plants, the guard cells differ from other epidermal cells in having:-

1. mitochondria

2. endoplasmic reticulum

3. chloroplasts

4. cytoskeleton

Subtopic:  Epidermal Tissue System |
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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 |
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The chief water conducting elements of xylem in gymnosperms are

1. vessels

2. fibres

3. transfusion tissue

4. tracheids

Subtopic:  Complex Tissue: Xylem |
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Which one of the following is not a lateral meristem?

1. Cork cambium

2. Interfascicular cambium

3. Phellogen

4. Intercalary meristem

Subtopic:  Meristematic Tissue:Classification |
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